There are a bunch of chinese microcaps that are as undervalued as CYIG. I know because I have shares in some of them. I bought a bunch of them and hope that maybe one or two of them turn out like CYIG.
An investor with $$$ and likes the business can certainly run the price up 50,000% in a day. Without insider trading.
*The most you can make short selling is 100%, but the upside is unlimited....apparently