What is the middle section of the Qingming Riverside Map?

In the middle section, the busy Bianhe Wharf:

Bianhe River is the hub of national grain transportation in the Northern Song Dynasty, and it is also the main road of commercial traffic. As can be seen from the picture, the population is dense and there are many grain ships. Some people are resting in the teahouse, some are telling fortune, and some are eating in the restaurant. There is also the "Wang's Paper Horse Shop", which is a grave sweeper selling sacrifices. Ships in the river come and go, end to end, pulled by trackers or rowed by boatmen. Some are full of goods, going upstream, and some are nervously berthing to unload. Across the Bianhe River is a large wooden arch bridge with exquisite structure and beautiful shape. Such as flying rainbow, hence the name Hongqiao. There is a big ship waiting to cross the bridge. The boatman is supported by bamboo poles; Hook the bridge with a long pole; Lead the boat with hemp rope; Several people are busy lowering the mast so that the ship can pass. People in the neighboring ship are also pointing, as if shouting something. Both inside and outside the ship are busy crossing the bridge for this ship. People on the bridge are also sweating over the tense ferry scene. This is the well-known Hongqiao pier, which is full of traffic and bustling, and is really the intersection of land and water transportation.