TikTok Software Engineer Intern interview questions

First there is a breif introduction about the team and the company, then the interviewer asked me to do a baisc introduction about myself. And after thet, there is one coding question, which I think should be hard, and it is not a tagged question.

The interview process is pretty straigtforward and traditional. I had two rounds of technical interviews, both of which covers resume and related cs fundamentals that were mentioned in my resume. The first round was coding round, and I was asked to implement lfu. The second round was system design. Both are conducted in English.