A source close to the deal says 99 raised $100 million, with Didi leading the round.
It comes 16 months after Didi put $100 million into US-based Lyft.
Didi, valued at about $30 billion after raising over $10 billion from investors (including Apple), adds muscle to 99’s fight against Uber in Brazil — as well as its mooted expansion across Latin America. Founded in 2012, 99 has 140,000 registered drivers in 550 cities across Brazil.
"Didi's financing, state-of-art technology and operations knowledge will play a key supporting role as 99 actively expands our network and services in Brazil and reshapes the competitive landscape in Latin America," said CEO Peter Fernandez on Thursday.
Many of Uber’s largest rivals teamed up at the end of 2015, vowing to make their apps inter-operable around the world in a bid to challenge Uber’s global ubiquity. The rebel gang includes India’s Ola and Southeast Asia’s Grab.
Didi isn’t the first Chinese tech giant to samba into Brazil — and not even Brazil’s recent economic woes are stemming the flow. Search engine firm Baidu has been active in Brazil for years with a number of social sites and apps as part of a broader push into emerging markets where there are many youngsters using the web on their phones. Xiaomi entered mid-2015.
This article was published on Tech In Asia. You can read it here. 
 "Anti-Uber push grows as Brazil's 99 gets $100 mn from China's Didi Chuxing")