In July 2002 the beginning of the second term of Tung Chee-hwa's administration, Chairman Tsang Yok-sing was appointed to the Executive Council under the Principal Officials Accountability System (POAS), succeeding Tam Yiu-chung. However the governing coalition between Tung Chee-hwa the DAB and the pro-business Liberal Party suffered from growing disunity as the popularity of Tung administration dropped. Although it continued provide stable support to the government as Beijing's demand, it paid a hefty political price in the sense of increasing middle-class disaffection with the party and growing rank-and file complaint. The DAB was increasingly frustrated by unequal political exchange with the government and the skimpy political rewards meted out by Tung. Tsang Yok-sing even openly aired his displeasure and advocated power sharing with the government.