Li Xier is a Chinese actress who graduated from the Beijing Film Academy and made her acting debut in 2010 with the television series Mad Detective Di Renjie.

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During the Sino-Japanese War, Ye Lingqing, a guerrilla captain of the Eighth Route Army, goes undercover to rescue a captured ally and locate a hidden cache of military supplies. As Japanese forces close in, Ye and his comrades race against time, risking their lives in a covert struggle that leads to a decisive victory on the eve of the Hundred Regiments Offensive....