Meta Software Engineer interview questions

Am from China. Got the recruiting information from my university forum. After submitting my resume, first is a online programing puzzle. It's 90 min long. Not very hard. After the puzzle, I got 2 rounds of phone screens. Each lasts 45min, interviewer will keep asking questions until time up. Then they flew me to HK for the final-round interviews. Too bad, got eliminated in the last round.

This was a telephone interview where the person was very terse and looking for very specific answers.