Si Yuchen's decision to go abroad was unknown even to Shen Liang and Xi Nan; it was a spontaneous move on his part.
He hadn't even considered Mu Shan, since she didn't want to leave Sea City, and the old man at home insisted on making things difficult for his brother's woman, so...
There was no way around it, Si Yuchen still couldn't completely forget his feelings for Mu Shan.
If he couldn't have her, then he had to give up completely, and then silently protect her from afar.
When his brother was still around, he protected his secret feelings for Mu Shan in the same way.
That would not change now either; this feeling would never change.
Si Yuchen also anticipated that Si Lingtian would check on Mu Shan's whereabouts as soon as he found out about his going abroad.
Discovering that Mu Shan had not left Sea City and wasn't even aware of his plans to leave, Mu Shan would no longer be a threat to Si Lingtian.
