Examples
sū苏zú族yú于18681868nián年yǔ与zhèng fǔ政府qiān dìng签订le了yí一xiàng项tiáo yuē条约。
苏族于1868年与政府签订了一项条约。
The Sioux had signed a treaty with the government in 1868.
明明签订了互不侵犯条约，竟然还来攻击我们。
They still attacked us, despite clearly agreeing to sign the non-aggression pact.
契约签订了。
The contract was signed.