Chinese Character Picker
Click the target Chinese characters in the image in the order shown; the challenge submits automatically once you have clicked the required number. The server validates the click order and hit positions, and the challenge works only once.
Click in order:
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Target character coordinates are never sent to the client; they are kept on the server only for hit testing.
Click order and total duration are validated: wrong order, missed targets, or instant clicking are rejected.
Each challenge can be verified only once; repeated failures trigger a short cooldown, and the endpoints are also rate-limited per IP.