It takes the average, adult Western male approximately 10 years to fully master Mandarin, assuming above average intelligence. Maybe that can be cut in half if one studies daily and has the brain space to learn thousands of foreign characters. Also... Move to China? In 2020? Are you currently aware of China's attitude towards foreign nationals? We wouldn't want our more starry-eyed members to end up in a Chinese gulag because they thought they could just "move to a 2nd tier city and marry a virgin 6".Move to China, a second or third tier city. Learn Mandarin. Go to church and join in all the activities there. You will meet a great, fun, 6 who is in her early twenties, virgin or 1 partner before with possibly no sex.
Big jump, and the deep end is really, really deep. But there you go.
Do your homework before you post mate.