One Plus 9r mobile phone with Huawei fast charge is not good because the various brands of fast charge agreement can not be universal.
The OnePlus 9r mobile phone does not support Huawei's fast charge agreement, only supports OnePlus's own fast charge agreement, so Huawei's fast charge cannot be used.
Should be the charging protocol is different, I use Xiaomi's fast charging Huawei's is also very slow