Xiaomi has introduced the Redmi 6 pro as a stock Android-running Mi A2 lite mid of this year in July, alongside the Xiaomi Mi A2, The handset has been on the Android One Program and now its time to upgrade the Smartphone. The company has reached out to Mi A2 lite owners, willing to participate in the beta plans.
You will have to install an QQ app which is used for the official communication for bugs and also for the features. Of course, you have to communicate in English and need to be aware of the basics of porting ROMs. There is also requirement of being active on the MIUI forum and need to be interested in getting into the discussion with other participants of the course.
All this can be done through the MIUI Global Forum app, available on Google Play Store. Then you have send your handset IMEI and complete filling an online form by this weekend. Xiaomi will reach out to the BUYERS that company has chosen.