Will China join TPP is not the question
Some people are still debating whether China would join the Trans-Pacific Partnership agreement despite the Foreign Ministry recently making it clear that Beijing has not changed its stance on the TPP even after the United States' withdrawal from the economic grouping.
The two main impressions the Chinese people have about the TPP are: It is the previous US administration's design to "contain" China, and the US President Donald Trump believes it would be drain on the US economy and therefore has "abandoned" it. And that the TPP could be an economic burden on China, if were to join it, is precisely why many Chinese people are worried; some even believe that by joining the TPP, China could fall into the "trap" of US diplomatic strategy.
While negotiating economic arrangements such as the Regional Comprehensive Economic Partnership and the Free Trade Area of the Asia-Pacific, China has been promoting inclusive growth in the Asia-Pacific region. So it is possible that China will cooperate with the TPP for that purpose, but that does not mean it might join the economic bloc.