Well that's a good idea.
You are just promoting it to a wrong target group:99.99% of Chinese bitcoin users with good English ability know Internet circumvention.
If your programme is not related to bitcoin, "off-topic" is the right place for you. Although your programme is mainly for people in Mainland China, the group is called "中文" (Chinese Language), not "中國" (China). Many people around the world speak Chinese, and the group is not reserved to people in Mainland China.