without this requirement, the performance requirement of public bidding is only the upper limit requirement, and there is no lower limit requirement.

generally, the upper limit is that the bidder's similar performance shall not exceed 81% of the total tender amount. For example, for a project with a total amount of 11 million, it is reasonable for a similar project with a performance requirement of 8 million, and generally 1-3 similar performances are required.

if there are further local regulations, you should refer to the specific regulations.