Chinese soprano Yao Hong, tenor Wang Hongwei and baritones Sun Li and Su Mu will sing a night of Chinese folk and patriotic songs at a concert accompanied by Shenzhen Grand Theater Philharmonic Orchestra. Yao Feng will wield the baton. Entry is free and no sign-up is necessary. Time: 7 p.m., Feb. 17 Venue: Square outside One Avenue, Futian District (卓悅中心外廣場) Metro: Line 1 or 10 to Gangxia Station (崗廈站), Exit B | 