Rongjian Lan was a search infrastructure engineer for Play Store at Google. He published over 10 academic papers on spatio-temporal querying and map-based visualization. Rongjian started researching on decentralized protocols since early 2017.Rongjian is the co-chair of ABC Blockchain Foundation, with more than 100 engineers from Google, Facebook, LinkedIn as members. He was a doctoral candidate of computer science at the University of Maryland College Park and obtained his bachelor’s degree from the University of Science and Technology Beijing.