Global private equity fund manager Warburg Pincus and China-focused fund manager Genesis Capital have invested US$120 million in a Series D round for China-based online tutoring company Zhangmen. The company offers personalized, one-on-one tutoring sessions to more than one million registered students across 600 cities in China. Separately, Warburg, along with a group of investors including venture capital firm Sequoia Capital and China-based internet and technology company Tencent, has invested CNY4 billion (approximately US$621 million) in a Series A round for China-based apartment rental service provider Ziroom. The company subleases apartments and manages 500,000 rooms in nine Chinese cities, including Beijing, Shanghai and Shenzhen.