Can Buddhists who convert to Buddhism learn Dan Dao?

If you convert to Taoism, you can naturally practice Dan Dao, which belongs to further practice;

If you convert to Buddhism, you can't learn Taoism, because Taoism belongs to heresy. "Since I have converted to Buddhism, I will never convert to evil spirits." Since I converted to the law, I have never converted to the classics of other religions; Since I converted to a monk, I will never convert to a heretic. "