Xi Ying didn't run behind his son.
After Xi Ling ran away to his room as if his tail was on fire, he called for Liu Lan and especially asked her to stand in front of Li Rui's room. He ordered her that no one should be able to disturb Rui's sleep.
In the past few months, Xi Ying knew that Rui was a very light sleeper. Even a little bit of noise could easily make her awake.
If it was any other person then Xi Ying would have appreciated this quality because this quality was only a part of those people who remained always on guard. They could sense danger around themselves very easily.
However, this Li Rui being a light sleeper made him feel distressed also.
Because it was very rare that she would sleep for long and deep.
