What does plain Sichuan dialect mean?

It means: stupid, not smart. Sichuan dialect collection is a dialect used by Sichuan, a land of abundance, to communicate with local people. Sichuanese love to count jars, but they are especially fond of joking. If you come to the land of abundance for business and tourism. The most necessary thing is to know Sichuan dialect in case you don't know it after suffering.