Partial career refers to the second job. For example, civil servants go to work every day. I had a lot of free time, so I invested in other restaurants, projects, and stock trading. These were all side businesses. Getting money from side jobs can also be called side money. For another example, for farmers, farming is a good job, a good official, and a good fortune. Occasionally raising pigs, occasionally growing watermelons, and occasionally growing grapes are just side jobs.