Luckin CMO Yang Fei (Image credit: Luckin)As Luckin Coffee gets its start on the NASDAQ, there’s a conspicuous absence in its corporate filings and press conferences. Yang Fei, Luckin’s CMO and one of the key architects of Luckin’s hyper-growth, is missing in action. One of those articles profiled Luckin CMO Yang Fei. Qian’s announcement made a break from Luckin’s previous practice, in which significant announcements featured both Qian and Yang Fei. It also means that investors need to keep a careful eye on Luckin’s advertising spend—without the competitive pressure of other firms, Yang’s advertising agency could be taking some cream off the top.