"Don't stop! Cheer up! Another five!" Dai Li urged Anshan Wang.
In the training yard, Wang stood in front of a pneumatic resistance chest expander, doing cross-pulling exercises with his arms continuously. The chest expander was relatively advanced. The most prominent feature of it being the precise adjustment of the training load.
Traditional fitness equipment is gravity-weighted, that is, the free weight is changed by the addition or removal of iron weight stacks. For example, a weight stack of the fitness equipment used in Europe and America mostly weighs 10 pounds usually. Five-pound stacks are not so commonly seen. The lightest ones weigh 2.5 pounds. That's to say, the minimum free weight added or removed in the training is 2.5 pounds.