Blackjack players seek to hit a natural blackjack (21 total) before the dealer against whom they are playing. At the same time, both sides have to avoid going over 21 9busting) as this is considered a loss too. To attain the balance of the two, skill and strategy is required to make decisions when cards are dealt.
Macau is a Chinese autonomous region, much like Hong Kong; formally a part of China, but with ample political freedom. While Macau is often regarded as the gambling capital of Asia, online casinos are not regulated. However, as gambling is popular and legal, many international live online casinos accept players from Macau.