Original: In the first phase, the Japanese secured the Pinghan Railway between Beijing and Wuhan; in the second, they eliminated the US air forces stationed in Hunan province and reached the city of Liuzhou, near the border with Japanese-held Indochina.
Simplified: In the first part, the Japanese secured the Railway between Beijing and Wuhan. In the second part they destroyed the US air forces in Hunan province and reached the city of Liuzhou.