A sign up bonus is an incentive awarded to new players who have signed up to a casino site. The players don't need to deposit money to claim their sign up bonus as signing up to the site is the only requirement. The bonus is meant to encourage players to join casinos and try games for free.
Macau is known as the only place in China where gambling is legal. It is a former colony of the Portuguese who legalized gambling back in 1850. Macau is a top tourist destination with many of the visitors coming in for gambling-related attractions. Even though land casinos are vast, online casinos and online gambling are taking over.