S4 Capital-backed MediaMonks, a creative digital production company, agreed to merge with TOMORROW, an award-winning Shanghai-based creative agency. Financial terms were not disclosed. "I've always been a raging bull on China's economy, its consumers and its brands. I'm delighted to welcome Rogier and his colleagues at TOMORROW to the S4 Capital family, in what is a priority market for us and one of several more moves in what will become the largest economy in the world," Martin Sorrell, S4 Capital Executive Chairman.