What does fxy mean, network stalk?

In rice circles, fyx means "Flying Cloud System", which is the cp name of Chen Feiyu and Leo.

Not long after Guan Wei announced the lineup, the related CP tide has been established, and the CP tide named "Feiyun Department" has ranked 30th in the CP list in Weibo, which shows how enthusiastic girls in rice circle are about taking CP.

Yi Haoxing is a costume drama jointly produced by Penguin Film and Otter Culture, directed by Shu-Pui Hou and starring Chen Feiyu and Leo (in no particular order).