C68 Spiderweb trace

Could it be that during their usual conversation, when he wasn't paying attention when talking, he made the Umbrella Sister feel that there were some clues between him and He Ying, or was it because of the matter between him and Wang Yan?

He Ying had that intention towards her. She had told the Umbrella Man before, and she had only laughed out loud at that time.

Other than Wang Yan's pregnancy