Examples
19781978nián年zhōng guó中国hé和rì běn日本qiān shǔ签署le了hé píng和平tiáo yuē条约。
1978年中国和日本签署了和平条约。
In 1978 a peace treaty was concluded between Japan and China.
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.