Economics: What is the difference between the price increase of Chinese cabbage in the Spring Festival and the price increase of vegetables in bad weather?

The price increase of Chinese cabbage in the Spring Festival is caused by the increase in demand and the constant supply (maybe the demand elasticity of Chinese cabbage in some areas is very small). At this time, both producer surplus and consumer surplus will increase (producer surplus increases because income increases, and consumer surplus increases because excess demand is met).

Bad weather causes the price of Chinese cabbage to rise because of the influence of supply (such as the decrease of vegetable farmers' output and the increase of transportation cost), but the demand remains unchanged, so the price rises, so it is likely that the producer's profit remains unchanged and the consumer's surplus decreases (according to the discussion of demand elasticity).

They have the same characteristics: temporary price increases.