diff --git a/wch/mcu/CH32L103/SOURCES.md b/wch/mcu/CH32L103/SOURCES.md
index a1b09f5..4535005 100644
--- a/wch/mcu/CH32L103/SOURCES.md
+++ b/wch/mcu/CH32L103/SOURCES.md
@@ -6,3 +6,10 @@
 | Reference manual | <https://www.wch-ic.com/downloads/CH32L103RM_PDF.html> |
 
 URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32L103/main/datasheet_en/CH32L103DS0.PDF> | `9c096cbc423ef4b6910a536e6b8c06df3cc541876b129bcc0f3485478613fce6` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32L103/main/datasheet_en/CH32L103RM.PDF> | `7dc8e971fad5635e252e20ac9ef0e282f28d4ac70bd788817c288310d4c7b415` |
diff --git a/wch/mcu/CH32L103/datasheet.pdf b/wch/mcu/CH32L103/datasheet.pdf
new file mode 100644
index 0000000..07aec22
Binary files /dev/null and b/wch/mcu/CH32L103/datasheet.pdf differ
diff --git a/wch/mcu/CH32L103/reference-manual.pdf b/wch/mcu/CH32L103/reference-manual.pdf
new file mode 100644
index 0000000..a087af7
Binary files /dev/null and b/wch/mcu/CH32L103/reference-manual.pdf differ
diff --git a/wch/mcu/CH32V006/SOURCES.md b/wch/mcu/CH32V006/SOURCES.md
index d2829c9..7db5ad9 100644
--- a/wch/mcu/CH32V006/SOURCES.md
+++ b/wch/mcu/CH32V006/SOURCES.md
@@ -8,3 +8,10 @@ Primary WCH source record for the CH32V005/006/007 and CH32M007 family.
 | Reference manual | <https://www.wch-ic.com/downloads/CH32VM00xRM_PDF.html> |
 
 URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V006/main/datasheet_en/CH32V006DS0.PDF> | `806ff03d11ebe8f522b6a10bfce20040f30f3cff6a751bd982efca788f9601f2` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V006/main/datasheet_en/CH32V00XRM.PDF> | `3983a3912e4356d17a2c32d4d36b721c13b9e6cbdba01e67478af62e1f337334` |
diff --git a/wch/mcu/CH32V006/datasheet.pdf b/wch/mcu/CH32V006/datasheet.pdf
new file mode 100644
index 0000000..af0ad70
Binary files /dev/null and b/wch/mcu/CH32V006/datasheet.pdf differ
diff --git a/wch/mcu/CH32V006/reference-manual.pdf b/wch/mcu/CH32V006/reference-manual.pdf
new file mode 100644
index 0000000..1038353
Binary files /dev/null and b/wch/mcu/CH32V006/reference-manual.pdf differ
diff --git a/wch/mcu/CH32V103/SOURCES.md b/wch/mcu/CH32V103/SOURCES.md
index bcf97a3..775d7a7 100644
--- a/wch/mcu/CH32V103/SOURCES.md
+++ b/wch/mcu/CH32V103/SOURCES.md
@@ -6,3 +6,10 @@
 | Reference manual | <https://www.wch-ic.com/downloads/CH32xRM_PDF.html> |
 
 URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V103/main/datasheet_en/CH32V103DS0.PDF> | `5719208b1846c735434e9e630a9c43068b38898f9bf6432556255187f3a213d4` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V103/main/datasheet_en/CH32xRM.PDF> | `7da287f39a8e68944d5d29ebab1f044d3e66552576acdcee1abb493f5a1b9142` |
diff --git a/wch/mcu/CH32V103/datasheet.pdf b/wch/mcu/CH32V103/datasheet.pdf
new file mode 100644
index 0000000..3e25743
Binary files /dev/null and b/wch/mcu/CH32V103/datasheet.pdf differ
diff --git a/wch/mcu/CH32V103/reference-manual.pdf b/wch/mcu/CH32V103/reference-manual.pdf
new file mode 100644
index 0000000..665532d
Binary files /dev/null and b/wch/mcu/CH32V103/reference-manual.pdf differ
diff --git a/wch/mcu/CH32V203/SOURCES.md b/wch/mcu/CH32V203/SOURCES.md
index 7803c75..0a912da 100644
--- a/wch/mcu/CH32V203/SOURCES.md
+++ b/wch/mcu/CH32V203/SOURCES.md
@@ -6,3 +6,10 @@
 | Reference manual | <https://www.wch-ic.com/downloads/CH32FV2x_V3xRM_PDF.html> |
 
 URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V20x/main/datasheet_en/CH32V203DS0.PDF> | `10af5de2779ce1e985162dceae2e829800b2d633d34491333b1ce90f4ffcbdd2` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V20x/main/datasheet_en/CH32FV2x_V3xRM.PDF> | `d961d2291a5d9079a8c391e89e5f9807d0c0fc22f66595c417acfd4ecebdbc44` |
diff --git a/wch/mcu/CH32V203/datasheet.pdf b/wch/mcu/CH32V203/datasheet.pdf
new file mode 100644
index 0000000..99ada74
Binary files /dev/null and b/wch/mcu/CH32V203/datasheet.pdf differ
diff --git a/wch/mcu/CH32V203/reference-manual.pdf b/wch/mcu/CH32V203/reference-manual.pdf
new file mode 100644
index 0000000..8837ddd
Binary files /dev/null and b/wch/mcu/CH32V203/reference-manual.pdf differ
diff --git a/wch/mcu/CH32V208/SOURCES.md b/wch/mcu/CH32V208/SOURCES.md
index 1303178..8f9fc1f 100644
--- a/wch/mcu/CH32V208/SOURCES.md
+++ b/wch/mcu/CH32V208/SOURCES.md
@@ -6,3 +6,10 @@
 | Reference manual | <https://www.wch-ic.com/downloads/CH32FV2x_V3xRM_PDF.html> |
 
 URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V20x/main/datasheet_en/CH32V208DS0.PDF> | `fb27cf113671f332bf576dec8e939bdaa1c2cdae50df83223f282935cbc2e9d3` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V20x/main/datasheet_en/CH32FV2x_V3xRM.PDF> | `d961d2291a5d9079a8c391e89e5f9807d0c0fc22f66595c417acfd4ecebdbc44` |
diff --git a/wch/mcu/CH32V208/datasheet.pdf b/wch/mcu/CH32V208/datasheet.pdf
new file mode 100644
index 0000000..c3e5ac9
Binary files /dev/null and b/wch/mcu/CH32V208/datasheet.pdf differ
diff --git a/wch/mcu/CH32V208/reference-manual.pdf b/wch/mcu/CH32V208/reference-manual.pdf
new file mode 100644
index 0000000..8837ddd
Binary files /dev/null and b/wch/mcu/CH32V208/reference-manual.pdf differ
diff --git a/wch/mcu/CH32V30x/SOURCES.md b/wch/mcu/CH32V30x/SOURCES.md
index fc3bc37..aeb7118 100644
--- a/wch/mcu/CH32V30x/SOURCES.md
+++ b/wch/mcu/CH32V30x/SOURCES.md
@@ -7,3 +7,10 @@
 | QingKe V4 processor manual | <https://www.wch-ic.com/downloads/QingKeV4_Processor_Manual_PDF.html> |
 
 The V307 datasheet covers the V303/V305/V307 family. URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V307/main/datasheet_en/CH32V20x_30xDS0.PDF> | `c3a54dcade4ae8f6e9103f0f4d8e1c01a8fcf06017df431125a7a77351d89bdd` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32V307/main/datasheet_en/CH32FV2x_V3xRM.PDF> | `d961d2291a5d9079a8c391e89e5f9807d0c0fc22f66595c417acfd4ecebdbc44` |
diff --git a/wch/mcu/CH32V30x/datasheet.pdf b/wch/mcu/CH32V30x/datasheet.pdf
new file mode 100644
index 0000000..1a4afee
Binary files /dev/null and b/wch/mcu/CH32V30x/datasheet.pdf differ
diff --git a/wch/mcu/CH32V30x/reference-manual.pdf b/wch/mcu/CH32V30x/reference-manual.pdf
new file mode 100644
index 0000000..8837ddd
Binary files /dev/null and b/wch/mcu/CH32V30x/reference-manual.pdf differ
diff --git a/wch/mcu/CH32X035/SOURCES.md b/wch/mcu/CH32X035/SOURCES.md
index 64be228..e2c02b6 100644
--- a/wch/mcu/CH32X035/SOURCES.md
+++ b/wch/mcu/CH32X035/SOURCES.md
@@ -6,3 +6,10 @@
 | Reference manual | <https://www.wch-ic.com/downloads/CH32X035RM_PDF.html> |
 
 URLs verified 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `datasheet.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32X035/main/datasheet_en/CH32X035DS0.PDF> | `8cccb68de9f878f56055c8925c5d11c771391f8ec0ecc705ac8ca77599402166` |
+| `reference-manual.pdf` | <https://raw.githubusercontent.com/ch32-riscv-ug/CH32X035/main/datasheet_en/CH32X035RM.PDF> | `c5dc49eb6a0086857bc120cf4c1646fa8530006fe5a21e7bbb632a075daf036a` |
diff --git a/wch/mcu/CH32X035/datasheet.pdf b/wch/mcu/CH32X035/datasheet.pdf
new file mode 100644
index 0000000..883c790
Binary files /dev/null and b/wch/mcu/CH32X035/datasheet.pdf differ
diff --git a/wch/mcu/CH32X035/reference-manual.pdf b/wch/mcu/CH32X035/reference-manual.pdf
new file mode 100644
index 0000000..9831f70
Binary files /dev/null and b/wch/mcu/CH32X035/reference-manual.pdf differ
diff --git a/wch/probe/WCH-Link/SOURCES.md b/wch/probe/WCH-Link/SOURCES.md
index 552bcdf..a296b5c 100644
--- a/wch/probe/WCH-Link/SOURCES.md
+++ b/wch/probe/WCH-Link/SOURCES.md
@@ -6,3 +6,9 @@
 
 The manual covers WCH-Link, LinkE, and LinkW probe modes. URL verified
 2026-07-21.
+
+Payload mirror (retrieved 2026-07-22):
+
+| Local file | Mirror URL | SHA-256 |
+|---|---|---|
+| `WCH-LinkUserManual.pdf` | <https://raw.githubusercontent.com/WeActStudio/WeActStudio.WchLinkW/main/WCH-LinkUserManual_EN.PDF> | `ea4050fa1ad63f83b65514e0b619a3a3edcd8eb191cfe9558abf86276d62acf3` |
diff --git a/wch/probe/WCH-Link/WCH-LinkUserManual.pdf b/wch/probe/WCH-Link/WCH-LinkUserManual.pdf
new file mode 100644
index 0000000..f5450e9
Binary files /dev/null and b/wch/probe/WCH-Link/WCH-LinkUserManual.pdf differ