淮海战役

Huaihai Campaign (Nov 1948-Jan 1949), one of the three major campaigns by the People's Liberation Army near the end of the Chinese Civil War, considered the determining battle of the war

name of a river

Huaihai, economic hub around Xuzhou 徐州[Xu2 zhou1], including parts of Jiangsu, Shandong, Henan and Anhui provinces

surname Hai

ocean / sea / CL:個|个[ge4],片[pian4] / great number of people or things / (dialect) numerous

naval battle

to fight / fight / war / battle

military campaign

forced labor / corvée / obligatory task / military service / to use as servant / to enserf / servant (old) / war / campaign / battle