Rebecca Davis editorShe may not be a household name anywhere other than her native China, but Chinese helmer Jia Ling has officially overtaken Patty Jenkins as the world’s highest-grossing female director for a single film.After an extended three-month run, Jia’s Chinese New Year blockbuster “Hi, Mom,” finally left Chinese theaters Tuesday. It has grossed $838 million (RMB5.41 billion) since its Feb.