He did it deliberately.
Zhao Ying'er's identity is unclear, and Fang Che doesn't want to delve into whether her feelings are genuine or not. He just wants to make it clear: don't waste your Kung Fu on me.
If Zhao Ying'er is a spy, sooner or later, Fang Che will catch and kill her one day.
If Zhao Ying'er is not a spy, and things continue like this, Fang Che knows very clearly: the next person to die because of him would be her.
So no matter what, Fang Che doesn't want to get involved in this relationship.
...
Master Song Yidao came out, dressed for a journey.
Seeing Fang Che and Ye Meng, he was somewhat puzzled: "This is?... What does it mean?"
"It's rare to have a chance to go out and play, so I'm taking my wife along to experience it."
Fang Che said.
"Her?" Song Yidao frowned: "This trip is not peaceful."
"She also has First Grade Martial Marquis level cultivation."
Fang Che said: "That should be enough, besides, there's you, Master, accompanying us."