The action he chooses of Push ups as his symbol and is related to his identity and nobody can copy him. It is a healthy concept which is accepted by most people even by Chinese society. This makes his being naked less of an issue with the Chinese people. He is very successful choosing this positive action so that he will not offend the political government.
And the way he films himself, he used his own professional skills as a photographer and a news reporter, so he knew how to record different environments because of his experience as if to record the news. He mentioned he recorded 8 minutes to finish the whole process including arriving on the location and undress and film and then get dressed and run away from security men. It was a risky process for him to make this video because nudity is not accepted in China.