Overboard

He thought about it and he wouldn't go back on what he said to TiShan. He only thinks the slap was too much. He would never turn his back on Luo and Qiu by now.
The fact he doesn't want TiShan and his children to meet has a deeper reason than it seems. He wouldn't split friends so easily but about it, he is really not letting Qi and LanJi go to TiShan, regardless the two are displeased and Sharyn is particularly angry at WuXin for it.
The reason is, he wants to see how TiShan reacts and if he will fight to meet his friends again. You don't understand the value of a person until you loose it. He will be disappointed if nothing happens or if his children manage to get to him. He even asks WonPil to kindly keep them split from his side too but he doesn't give a particular explaination. At most, he explains Lani the reason.