Refueling literally means adding fuel or lubricating oil to a running machine or car. The broader usage is to encourage and support others, to give others an encouragement or motivation, and it is the most commonly used word in life.
"Come on" is a labor song in the oil press workshop. Several people shouted their trumpets, and with a loud noise like a bell, the squeezed oil was added to the oil container. Refueling is a repetitive process because you have to work hard to refuel. It's not that people often guess at random, is it because people add some oil to each other first, and talents have strength? No matter how the author draws a conclusion, this explanation is not forced.
In detail, the traditional oil pressing technology is that raw materials such as peanuts, sesame seeds or tea seeds are baked, ground and steamed to make cakes, several cakes are erected and horizontally stacked in a wood pressing tank, and then wooden wedges are inserted one by one on the right side (or both ends) of the tank. Wedge insertion is a hard job. Generally, it takes several people to grasp the rope, hammer handle or hammer body, which is a bit like ringing a bell and hitting a wooden wedge forward with a suspended stone hammer or wooden hammer. This action is also called bumping into oil. At this time, everyone or the clappers will shout their songs, such as "One, two, three, come on" and "Come on, stop coughing". The hymn of hitting oil varies from time to time and from place to place. More importantly, the meaning of "refueling" is unreasonable (it should be "wedging" or "bumping out"). Therefore, as soon as this poem came out of the oil mill, the original intention was forgotten and there was no way to guess.
Don't forget: the refueling number in this sports field is also the refueling number before it was transplanted from the oil mill. In this simple, warm and loud cry, the simplicity and cheerfulness of the working people in China continue.