Located near the city of Qinhuangdao on the northeastern coast of the Hebei Province, the Changli Golden Beach is about 30 km (19 miles) of sand dunes that have built up from the outpouring of silt from the Liugu River into the sea, where wind and current have returned the sand to shore. Although some portions of this stretch of sand have become more littered and run-down than others, there are some excellent beaches where you'll find swimming, resort accommodations, sunbathing, theme parks, or, if one for a little aimless wandering, miles of rising and falling sand.
We suggest hitting up either Bedaihe or Nandaihe, which are the most well-maintained beaches and have unique sand sculptures. You'll have to pay entrance to the main beaches, but there are plenty of free ones in the vicinity if you aren't up for paying for the amenities. About a 3 hour drive east from Beijing on the G1, you could spend a day or two exploring the most attractive stretch of coast in this part of China. Also, be sure to catch the fireworks that happen nightly!
Note:The nearby island of Qinghuang really comes alive in the summer, whether you're one to spend your time in the surf or visit wildlife attractions like the safari park located there. For more information, consult the included Qinhuangdao page.