Southern China---Many great cities are near together here, which included:
Hong Kong, one of the greatest city in the world; Shenzhen, Miles away from HK, and a beautiful city but a lot cheaper than HK, and money means women here, and a lot more cities, which I don't think you can explore them all on your time limit...
Zhuhai, beautiful green city, and it's also miles away for Macau, if you don't know what Macau has offer, do a bit of research, they're the "east Las Vegas", which will surpass Las Vegas's gambling revenue in a year two, and the craziest, biggest gambler are all here. Within the few year, Las Vegas company includes sands, Wynn, and MGM are planning to invest up to 10 billions in the tiny insland of southern China, and they're also planing to build the world's first underwater casino in the ocean.........Also, it was reported that they just sold a license for 900 Million, yes, near a BILLION for just a freaking license. Just think about this, China has over 1 billion people, and with their booming economy, and Macau being the only place legal to gamble there, you can imagine how crazy it is, and this tiny island are located in probably the richest port area of China too.
Tokyo---Again, one great city, a lot to see, but you gota be ready to bring a lot more money than you expected, because things are hell of expensive here, it's the out of control...however, they have a lot of interesting things to see, which includes fashion, technology, and Jap porn.......