As for HTC machines, I personally don't recommend them, because there are too many types of machines, so there is a lack of workmanship, and now in our mainland, the warranty of parallel imports is a problem
Let's basically forget Tianyu's machine. Although the price is low, it is not very competitive now.
Meizu MX is currently recommended, with dual-core and quad-core. The price of dual-core is around 2000, which looks better. The price of the RE version is lower.
I hope you will adopt it!