Yes, the Mi 13's screen is made by Huaxing Optoelectronics.
Because millet 13 at the time of release has publicly said that the use of Huaxing Optoelectronics company OLED screen, Huaxing Optoelectronics in the field of mobile phone screen has a good technical strength and market share.
In addition, Xiaomi has also selected Huaxing Optoelectronics as a screen supplier for many times in its subsequent products, which can be seen in its recognition and trust in its technical level. Therefore, it can be concluded that the screen of Mi 13 is that of Huaxing Optoelectronics, and Huaxing Optoelectronics has strong strength and competitiveness in the field of mobile phone screens.