@JohnMa Seemly, a condition is missed in Lemma 3.5? And in the proof of Theorem 1.1 (page 9 and 10), why the only two things are becoming strictly mean convex and iteration. In fact, I am not sure there are only two things. In my view, strictly mean convex and initial condition of iteration are not contradictory. How to understand it ?

@Narcissusjewel hello