Chinese President Hu Jintao had a phone conversation with US President George W. Bush Monday evening,according to sources with the Foreign Ministry.     Bush thanked Hu for his congratulatory message when he won the re-election, saying he will further promote bilateral cooperation in various fields during his second term. Bush reiterated the US government will not change its stance on the Taiwan question.     Hu spoke highly of the progress in bilateral cooperation in thelast few years, saying Sino-US relations would advance in a healthy and stable manner so long as the two sides observe the principles enshrined in the three Sino-US joint communiques.     Hu said China appreciated the US commitments to one-China policy and the three Sino-US joint communiques and its opposition to "Taiwan independence".     The two heads of state pledged to further promote bilateral ties and said they were expecting to meet again during the upcoming 12th economic leaders' meeting of the Asia-Pacific Economic Cooperation (APEC), the sources said.