这是一个实验性黑板（推荐使用PC浏览器，使用前请切换成黑板）

This is a experimental Guestbook (PC browser recommended, switch to blackboard before proceeding)

https://witeboard.com/8f7ad640-b5df-11ed-9f5d-a990a8e5d50a

https://apption.co/app_posts/1e0d1d27

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