RaLegacy
The reason why it is being kept as a secret, is because of Li Lian’s status of direct disciple of the Leader of the sect. This woman wants to groom Lian into the next Leader... but there is a rule (or perception) that the leader has to be single... no husband allowed. So, if it were to become widely known, she’d lose her status. Xiao Fang is unwilling to hurt her that way.