于是双方达成默契，等开标时，该医院要求该公司尽量压低投标报价，以确保中标，在签订合同时再将货款提高。

So the two sides reach a tacit understanding, etc when opening bids, the hospital has asked the company to bid price quotations to ensure low bid in when signing a contract, and payment increased.

youdao

It's illegal, so they can't sign that as a contract, but they they can just agree to do it.

因为是违法的,合同也就无效了,不过他们可以私下达成默契

耶鲁公开课 - 博弈论课程节选