Complex sentence: Like their counterparts in the Chinese government, the Vietnamese government has never announced any information on its actual military casualties, but from Chinese estimate Vietnamese side had 42,000 soldiers killed and 70,000 militias also killed by the Chinese PLA.
Split into simpler sentences: Like their counterparts in the Chinese government, the Vietnamese government has never announced any information on its actual military casualties. China estimates Vietnamese side had 42,000 soldiers killed and 70,000 militias also killed by the Chinese PLA.