There may be two reasons why Chen Zheyuan is called CG:

1. Zhou Siyue, played by Chen Zheyuan in "The Secret of Darkness", has a line that is "Because I love You, more because I don't love you", and the Chinese homophony of "because l love you, or because l don't love you" is "because l love you, or because l don't love you", so he was ridiculed as cg.

2. Chen Zheyuan’s English name is Victor. In English, Victor’s homophones are “Victor” and “Victor”. His name in Chinese sounds similar to “Loser”. Hence he is called "loser" or "loser". The "loser" can be simply called "the loser" in some contexts, so he is called cg.

It should be noted that these two reasons are just ridicules and jokes by netizens and have no real basis. Chen Zheyuan is an excellent actor, and his acting style and strength should be respected and recognized instead of being affected by some jokes.