That's what they call the YangTze - The Chang Jiang 长江，the Long River - which is in fact the longest river in the world. What you see here is the river at Wuhan 武汉, a city of 6 million about 400 miles west of Shanghai. A coal carrier heads west, a tug pushes a barge loaded with fiber of some kind (while crew on top of the pile directs the pilot), a fisherman and mate - tossing a net by hand.
You'll also see here a couple of dredges, a fish monger selling to people on line for the ferry, two friends Liao Meizhen 廖 美珍, Teng Rui 腾锐 and fellow passengers on the ferry ride. Cruise ships leave from here down river to Shanghai - or west up through the 3 Gorges Dam locks to the Three Gorges 三峡 at the border of Sichuan and Hubei provinces.