Complex sentence: On March 27 630, the Xueyantuo allied with the Chinese crushed the Eastern Qaghanate at a mount of the Yinshan completely, Illig Qaghan escaped, but was handed over into the hands of Chinese by his subordinate qaghan on May 2.
Split into simpler sentences: On March 27,630, the Xueyantuo allied with the Chinese to defeat the Eastern Qaghanate in the Yin Mountains. Xieli Khan escaped, but was handed over to the Chinese by his subordinate qaghan on May 2.