ByteDance interview questions

In the first stage, the interviwer spoke english and mandarin. He asked me to design a basic rate limiter. Went to second stage. The second stage Asked a Leetcode question and the interviewer wanted to communicate entirely in mandarin

The first round with MD, second round with hiring manager. Very hard, the first round was behaviroual and technical combo. Second round was a case study and need to be completed for two days.