下海

Etymology
In the business sense, the analogy is that going out to the sea is usually risky and unpredictable.

Verb

 * 1)  to sail out to the sea; to go to sea; to go fishing, swimming, surfing (or other activities) in the sea
 * 2)  to resign from one's profession and venture into doing business
 * 3)  to turn professional
 * 4)  to be driven to prostitution
 * 5)  to go into the pornography or sex work industry
 * 1)  to go into the pornography or sex work industry