Sweden’s Ninjas in Pyjamas (NIP), one of the world’s best-known esports teams, has merged with a Chinese counterpart to form a new entity which could be listed in the United States by year-end, two people with direct knowledge of the matter said.NIP, best known for its powerhouse Counter Strike team, has agreed to merge via equity swap with ESV5, which counts China’s videogame streaming site DouYu, anti-virus firm Qihoo 360 and late Macau casino magnate Stanley Ho’s son Mario Ho among its investors, the people told Reuters.