Xiaomi has opened registration for the Xiaomi Explorers scheme for 2021. Those interested simply need to answer a few straightforward questions and could eventually find themselves first in line in regard to testing future Xiaomi products. A Mi Account is required to apply to be a Xiaomi Explorer.
https://www.notebookcheck.net/Xiaomi-Explorers-global-registration-opens-for-would-be-product-testers.558329.0.html