Innova Solutions Sviluppatore Software interview questions

Receive the phone call from HR, she said that they're looking for a front-end engineer, then she said she needed to check my English ability so she switched to English for a few minutes. There were two interviewers, one talked in English and asked you answered in English, the other said she was not good at English and she asked all the technical questions in Mandarin. After a few front-end questions, they said that they're actually looking for back-end engineer with nodejs skill rather than front-end engineer and sent me out.