Xiao was just at the Mall with his sister; Hutao, who was a literal ball of Energy. He just hung around her, chuckling occasionally at her Antics.

The two were walking around when Hu Tao Abruptly stopped, So Xiao did too on instinct. Then Hu Tao Just Went:

"Oh how Happy I am today." Hu Tao said, taking a step back and shoving Xiao.

That Caused Xiao to Fall.. on top of someone.. and they were in quite the compromising position. Hu Tao just giggled like a gremlin.