After Mao's death, the Gang of Four was quickly arrested by Hua Guofeng and held responsible for the excesses of the Cultural Revolution. Elder Deng Xiaoping took power in 1978, and instituted significant economic reforms. The Party loosened governmental control over citizens' personal lives, and the communes were gradually disbanded in favor of working contracted to households. This marked China's transition from a planned economy to a mixed economy with an increasingly open-market environment. China adopted its current constitution on 4 December 1982. In 1989, the suppression of student protests in Tiananmen Square brought condemnations and sanctions against the Chinese government from various foreign countries.