Chen Yihua, a senior one student in Guangzhou 16, has posted slogans in many public places in the city since May 4, 2012000, calling on everyone to oppose spending huge sums of money to renovate the subway station and collect signatures from the citizens. Some netizens posted a photo of him holding a banner to collect signatures in Weibo. It was forwarded more than 10,000 times in just a few days, which triggered a discussion boom. Some netizens praised him as "courageous". At the same time, the public's doubts about the transformation of 1 line also swarmed. In the face of public doubts, Guangzhou Metro Company replied to Chen Yihua three times in a week, and finally said that it would carry out renovation in line with the principle of economy.