Complex sentence: During World War II Guangxi was a major target of Japanese attacks, but although a major offensive was launched in 1944 to take the western half, Zhuang guerrillas under Bai Chongxi routed the Japanese.
Split into simpler sentences: During World War II, Guangxi was a major target of Japanese attacks. Although a major offensive was launched in 1944 to take the western half of the province, Zhuang guerrillas under Bai Chongxi routed the Japanese.