Jerry Fullstack Engineer interview questions

Interviewed with the China team. The process is very disturbing. They are hiring fullstack engineers, and they basically just throw an online coding assessment to you. It takes you a while to finish and send back. But they just reject you without making a sound or providing any feedback, not even a thing about the code you submit. Why would I even waste time on this and take some time but eventually leave without talking with an alive person of them? Totally a waste, Guys please dodge this company. Use your time to do something meaningful.