Hétóng dàoqī le, zhèjiùshìshuō wǒmen děi chóngxīn tánpàn.
The contract has expired — that is to say, we need to renegotiate.
Tips
usage
这就是说 is used to restate or clarify something just mentioned. Similar expressions: 也就是说 (yě jiù shì shuō, 'that is to say'), 换句话说 (huàn jù huà shuō, 'in other words').
