After a round of masked pleasantries, the two women in white-collar attire sat down in a coffee shop. The server brought menus. Raina Lu ordered nothing. Vera Zhuang seemed about to order coffee when Raina Lu stopped her—with a standard, distant smile she warned Vera Zhuang seriously: "You'd better not order coffee. You know how hard that is to wash off if it gets on you." Vera Zhuang lifted her eyes slightly and laughed softly. She ordered soda water. "Did you mean you wanted to splash it on...