Environmental protection volunteers make a 9-meter-long "drift bottle" with thousands of discarded plastic bottles at park in Hangzhou,capital city of east China's Zhejiang Province. (Photo source: zjol.com.cn)
(Photo source: zjol.com.cn)
(Photo source: zjol.com.cn)
(Photo source: zjol.com.cn)
(Photo source: zjol.com.cn)