Changchun's current economic situation is quite good, and there are quite a few industries that can be engaged in. You can first investigate the market situation in Changchun, and first look at which local industries are highly competitive and which industries are hot. It is also good to find an unpopular project in hot industries. It is necessary to look at the market and seize the blank of the market. Personally, it is better to choose a new product with characteristics, which is less competitive and easier to make achievements.