In most factories in China, humans work like if they where robots, one job might be to go with a part from one place to another place, witch could literally be replaced by a transport band. Some workers are extremely skilled and fast though, replacing them with robots would probably cost much more then their salary. It can be hard to see the economic sense in deploying robots when the robots does things five times slower, but when the robot works, you can do something else. Even if you can clean the dishes faster then a dishwasher, it does save you time! And once something has been automated, it's much easier to scale.