What If We Drained the Seas of Southeast Asia Which Island Joins Asia First

Lower the sea around Southeast Asia one metre at a time. Which island is first to be joined to mainland Asia by dry land? Borneo, Taiwan, Sri Lanka... or Phu Quoc?

First: Sri Lanka at 5 m. By 50 m Sumatra, Java, Bali and Borneo are all one landmass with Asia (Sundaland). Lombok, right next to Bali, needs 207 m: deeper than the sea fell in the ice ages. That gap is the Wallace Line.