Didi Chuxing Software Development Engineer (SDE) interview questions

I applied online, and shortly was invited to a OA test. After finishing the OA test, I was invited to a technical interview in a week. 1. Two leetcode medium questions for the OA. 2. Technical interview for previous projects. After brief conversation of my previous experience, I then was invited to a coding test via the interactive platform in 30 minutes. The question was like lc 208. Implement Trie (Prefix Tree). I did not pass all the test cases.