BEIJING, China--(BUSINESS WIRE)--WPP and Millward Brown today announced the fifth annual BrandZ™ Top 100 Most Valuable Chinese Brands, with internet service company Tencent becoming the most valuable Chinese brand for the first time, and newly-listed online retailer Alibaba entering the ranking at No. 2. Both brands leapfrogged long-time leader China Mobile, which had held the top spot since the ranking launched in 2011. The 2015 ranking, carried out by marketing and brand consultancy Millward