Taoist teachers' colleges are rare, but it's not without the ancients who once visited Taoism for three years, five years or even ten years.

If you really want to learn advanced Taoism, you can visit virtuous people in the city and mountains. Don't expect a master to teach you much skill.

That's impossible, but you can naturally produce your own opinions over time by completely learning what the master teaches.

Because practice is boring and long, it takes decades to achieve something, and time is too long.