Following extensive anti-corruption purges, the seven-member Central Military Commission was depleted to only two remaining members: Chairman Xi Jinping and Vice Chairman Zhang Shengmin.

From the articleChina elevates a military general to the Politburo and seeks to strengthen party disciplineAlso in China Promotes Key Figure Enforcing Military Purges to Communist Party’s Ruling Politburo, Who is Zhang Shengmin? China promotes Xi Jinping's military purge chief to Politburo | Today News, Xi Jinping elevates general who led purge of China’s military, China promotes Zhang Shengmin, key player in PLA anti-graft drive, to Politburo