China actively participates in Asia-Pacific Economic Cooperation (APEC), reserving differences while seeking common ground and promoting cooperation.   Addressing the 13th APEC Economic Leaders' Informal Meeting in Pusan, ROK in November 2005, President Hu Jintao elaborated China's views on global economic balance, stability and sustained growth, as well as key issues of APEC cooperation and development direction; he called upon the international community for an effective response to the imbalance in world economic development, to work together for the healthy development of a multilateral trade system, to liberalize and facilitate trade and investment, to achieve the Bogor targets on schedule, and to deepen and expand economic and technological cooperation. The President urged APEC members to cooperate closely in tackling avian flu threatening Asia-Pacific regions and even the whole world. In the same year, China hosted the APEC Seminar on Renewable Energy. In 2006, China has hosted the APEC Seminar on Emerging Infections to strengthen regional cooperation in preventing infections affecting humans, such as highly pathogenic avian influenza (HPAI). China was praised by APEC members for its efficient, transparent and responsible attitude and for its pro-activity in promoting international cooperation to tackle the avian flu issue.