Optimize README

README.md

@@ -52,7 +52,7 @@ It's CC-NC. So DIY for yourself and for your friend, don't make money from it.
 * 2x 0603 5.1kohm resistors (R20, R21) for USB. If you plan to use the native USB socket on the Pi Pico directly, then the Type-C socket and resistors can be omitted, making the soldering much simpler.
 * 3x MPR121 modules, there're many types in the market, choose ones like this.  
   https://www.sparkfun.com/products/retired/9695  
-  Before solder MP121 module to the main PCB board, remember to **cut (unshort) the ADDR pin** which is short by default.  
+  Before solder MP121 module to the main PCB board, remember to use a knife to **cut (unshort) the tiny trace that connects ADDR to the GND**. Please be careful not to cut more than necessary.  
   <img src="doc/mpr121_cut.png" width="40%">
 * Leave U5, U6, U7 area discrete components empty as we're using MPR121 module, not the chip.
 * 1x SN74LV1T34DBVR (SOT-23-5) level shifter (U8), if you can't find one, use a 0603 10ohm resistor (R4) as an alternative.  

README_CN.md

@@ -61,7 +61,7 @@ https://github.com/whowechina/
 * 3x MPR121 模块，市场上有许多类型，选择像这样的。
   https://www.sparkfun.com/products/retired/9695 
 
-  在将 MP121 模块焊接到主 PCB 板之前，记住**切断（断开）默认短接的 ADDR 引脚**，也要注意不要切过红线之外的区域。  
+  在将 MP121 模块焊接到主 PCB 板之前，记得用小刀**切断 ADDR 和 GND 之间的微小连线**，注意绝对不要切过头。  
   <img src="doc/mpr121_cut.png" width="40%">
 * 因为我们使用的是 MPR121 模块，而不是芯片，所以 U5、U6、U7 区域的离散组件留空。
 * 1x SN74LV1T34DBVR（SOT-23-5）电平转换器（U8），如果你找不到，可以用 0603 10ohm 电阻（R4）替代。