Rebecca Davis editorFive competitive local titles have announced as of Monday that they will be vying for box office supremacy in China over the May 1 Labor Day weekend, a public holiday.They include a long-anticipated video game adaptation, an omnibus pandemic film helmed by three different female big shots from China, Hong Kong and the U.S., a sleek Aaron Kwok-starring thriller, a TV series adaptation and the first title from helmer Li Yu not to star the now-disgraced Fan Bingbing in 14