U.S. stocks tick down as Apple drags tech sector lowerMajor lithium reserves discovered in SichuanNASA's next Mars mission to probe deep interior of red planetChina discovers new oilfield with over 100 mln tones of reservesChina's auto export ranks first globallyFacebook CEO apologizes for data misuse in prepared testimony to CongressA Boeing 737 MAX arrives in Guangzhou, ending nearly 5Xi Story: President Xi's Sports AspirationDemand from China drives U.S.' soybean tradeXi Meets Nepalese Prime Minister