I passed the interview in Hongmen Technology Beijing Branch, but I was asked to go to Shenzhen Head Office for training. Is this reliable?

This should be reasonable, because you just passed the interview of the branch, and their branch can be qualified to recruit personnel, but not qualified to train employees. After the training, they will still return to work in the branch, and it is normal to go to the head office for training. I've had this experience before! You can rest assured and hope to adopt it! thank you