Thrash legends Metallica played their first-ever gigs in China over the weekend, but are sure to return to the world's most populated country again after the reception they received at two sold-out nights in Shanghai's Mercedes-Benz Arena. The first night's concert, in fact, set a record for the arena, selling out faster than any performance by a Western act ever. The 10,000-plus fans each night drank in the experience, chanting and singing along with all of Metallica's classic hits. Check out some fan-filmed video footage from the shows below.