It was a standard leetcode question. Should prepare for top 100 and you'll find one of the questions. Practice and prepare and know your leetcode deep enough. You'll be able to solve it
3 rounds of technical interview and 1 round of hr interview, expecting basic procedure, e.g resume discussion and coding exercise, and seldom you will see behaviroal questions. Maybe in Chinese.
After recruiter call and connect to discuss experiences and stacks used. Then it's a 1 hour live coding interview where interviewee got asked some questions then proceed with interview coding questions.
Interview questions [1]
Question 1
Given a matrix and some obstacles, find the closest point to you that's reachable and not blocked.