Two of Chinaâs biggest tech startupsâMeitun.com, Chinaâs version of Groupon.com, and restaurant-review app Dianping Holdings Ltd.âare nearing a merger that would create a company with a combined value of more than $15 billion, Rick Carew and Juro Osawa report for the Journal. Dianping in March raised $850 million from a group of investors including private equity firm FountainVest Partners.