Earth Longzhi is a new sub-group of APT41 which is a cyber-espionage group believed to be based in China. Based on our analysis of their long-running activity through 2020-2022, we have identified two major campaigns mainly targeting Asia-Pasific countries including Taiwan. In this presentation, we will introduce the newly found malwares and noteworthy TTPs observed in these campaigns. And adding to that, we will describe the detail process of "how we attribute". We believe that sharing the attribution process, not only technical details of malwares, will help security community.