China has recently expanded their visa waiver provision, allowing certain in-transit visitors to visit the country for 144-hours (6 days) without a visa. This is really a great opportunity to get in a not-insubstantial visit without the hassle and expense of obtaining a Chinese visa before you leave your home country, the only other option for travel to China. The requirements for this waiver are specific, though:
You must arrive in China from one country and depart to a third country, i.e., you CANNOT simply fly to China and back from your home (or another) country.