The ninth preparatory meeting for the 11th Asian Rock Mechanics Symposium (ARMS 11) was held online on September 28, 2021. Academician Kang Hongpu, the vice president of the ASRME, Professor Yang Qiang, the vice president of the ISRM, and Professor Yang Xiaojie, the chairman of the organizing committee, attended the meeting. The meeting was chaired by Wang Zhuo, the Deputy Secretary-General of the ASRME. A total of 76 participants from ASRME, the organizing committee, and the working committee attended the meeting. During the meeting, the challenges and the lastest arragenemnts for the ARMS 11 were reviewed. Due to the pandemic, ARMS11 will be held in an online/offline hybrid mode with 1,500 attendees and 102 exhibitors. Currently, it has received 1084 abstracts and 800 papers. The conference will have 30 sub-symposiums. Further arrangmeents are discussed to ensure that ARMS 11 will be as a fruitful and rewarding event for the rock mechanics and rock engineering community in Asia and around the world.