The 9th Asia-Pacific bonsai and suiseki exhibition and convention opened here on Sunday, attracting more than 500 experts and lovers of bonsai and suiseki from 23 countries and regions.With the theme "friendship, peace and culture", the exhibition and convention is aimed at encouraging more people to enjoy the arts of bonsai and seiseki by sharing knowledge and bring friendship among countries, to create harmony with a good environment, said chairman of the event Mai Paiman at the opening ceremony.At the exhibition, 312 pieces of bonsai and 320 pieces of suiseki were displayed and most of them from Indonesia. Experts and representatives will also hold seminars and lectures as well as bonsai demonstrations during the three-day event.The Asia-Pacific bonsai and suiseki exhibition and convention was held biannually since the first one held in Bali in 1991.