In 2004, He Xiaopeng founded UC.

​In 2006, UC received investment from Lei Jun.

​In 2008, Lei Jun personally served as the chairman of UC until he left UC in 2010 to found Xiaomi Technology.

​In 2014, after He Xiaopeng sold UC to Alibaba at a high price, he started his second business and invested in Xiaopeng Motors. Lei Jun participated in the angel round of financing for Xiaopeng Motors.

​In January 2018, Xiaopeng Motors completed a round B financing led by Alibaba, Foxconn and IDG, with a scale of 2.2 billion yuan. On July 18, Lei Jun visited Xiaopeng Motors' Guangzhou base for a one-day inspection and test-drove the mass-produced version of G3.

​In 2019, Xiaomi Group invested 50 million US dollars in Xiaopeng Motors. When Xiaopeng Motors went public on the US stock market, Lei Jun publicly expressed his support and called He Xiaopeng the "mentor of dreams."

​On August 27, 2020, Xiaopeng Motors was listed on the New York Stock Exchange in the United States, and Lei Jun personally went to the scene to cheer.

​In 2021, Xiaomi Group decided to step into the automotive field, and Lei Jun began to participate more deeply in the automotive industry.

​In 2022, news about Xiaomi Auto's first model SU7 began to spread, and some people believed that this model might compete with Xiaopeng Motors' P7.

​In 2023, Lei Jun announced the high-level personnel adjustment of Xiaomi Group, among which Lu Weibing was promoted to group president, which shows Lei Jun's emphasis on Xiaomi's automotive business.

​In December 2023, Xiaomi held a technology conference, demonstrating five core technologies, and the first car Su7 was unveiled.

​On April 29, 2024, 32 days after the release of Xiaomi SU7, the 10,000th mass-produced vehicle officially rolled off the assembly line