In 2003, on behalf of the Beijing Speed Racing Team, he participated in the National Automobile Rally Championship Shanghai Station and won the sixth place in Group N, Changchun Station won the eighth place in Group N, and Beijing Station won the sixth place in Group N.
In 2004, he was seventh in Group N of Shanghai Station and fourth in Chinese mainland.
In June 2004, he joined Yunnan Honghe Racing Team.
In 2004, he won the Asian Formula BMW Qualifying Championship. Awarded a BMW Scholarship of $50,000.
Take part in the annual Formula BMW Asia Championship. Seventh in Bahrain and first in the Rookie Cup.
Eighth in Malaysia and second in the Rookie Cup.
Seventh in Shanghai and second in the Rookie Cup.
Sixth in Japan and first in the Rookie Cup.
In 2005, he joined the Shanghai Volkswagen 333 team.
In 2005, the National Rally Championship 1The 6-liter group is fourth in Shanghai Station, fourth in Guizhou Station, fourth in Liupanshui Station and fourth in Kunming Station.
In 2005, he was the champion of the Zhuhai station of the 1600 cc group of the National Automobile Track Championship, the runner-up of the Shanghai station, the third place of the Beijing station and the champion of the closing station, and the runner-up of the 2005 year.
In 2006, on behalf of Shanghai Volkswagen 333 Team, he participated in both the National Automobile Venue Championship (CCC) and the National Rally Championship (CRC), and won the third place in the 1600 cc group of the National Automobile Track Championship in Shanghai and the second place in the Shanghai Station of the National Automobile Rally Championship.
In 2007, on behalf of Shanghai Volkswagen 333 Team, he participated in both the National Automobile Venue Championship (CCC) and the National Rally Championship (CRC), and won the annual championship of the 1600 cc class of the National Automobile Venue Championship.
In 2008, on behalf of Shanghai Volkswagen 333 Team, he participated in both the National Automobile Track Championship (CCC) and the National Rally Championship (CRC), and won the Zhuhai station of the 1600 cc group of the National Automobile Track Championship.
In 2009, he transferred to the Shanghai FCACA team in the National Rally Championship (CRC), and drove the Subaru Impreza N14 modified by ProDrive Racing Company to participate in the N group competition, and won the national championship of Beijing Station and the national championship of Shaowu Station, and beat Liu Caodong to win the annual championship of domestic drivers in the international group. At the same time, he continued to represent Shanghai Volkswagen 333 Team in the China Touring Car Championship (CTCC) 1600 cc class and won the championship in Guangdong. In addition, he and Dong Hebin made their debut for the Chinese team in the ROC Nations Cup, first beating the strong Finnish team from the Group of Death to win the semi-finals, and then losing to the British team led by Jensen Button 1:2 in the semi-finals.
After going to Australia in September 2009 to participate in the World Rally Championships, Han Han wrote an article titled "Work Report on Supervising and Guiding the World Rally Championships in Australia", in which he used ironic writing to compare China and Australia in terms of event hosting, economic environment, people's consciousness, etc., claiming that Australia is inferior to China in all aspects, so as to satirize China's shortcomings in some aspects of the event.
On the afternoon of December 6, 2009, he won the championship of the 6th round of the 2009 China Touring Car Championship in the 1600cc class, which was also the first and only championship of Shanghai Volkswagen 333 Team this season.
On December 20, 2009, he won the championship of the Shaowu Rally in the final race of the 09 season CRC, and perfectly won the 2009 championship of Group N of the China Automobile Rally Championship. So far, Han Han has become the only double annual champion in the history of Chinese professional racing, both track and rally, and has the championship trophy that symbolizes the highest honor of two Chinese professional racing events.
At the press conference of the 2010 China Rally Championship held at the Mohe Ice and Snow Stadium in Heilongjiang Province from March 13 to 15, 2010, Han Han officially joined the Subaru China Rally Team.
On October 16, 2011, the seventh round of the CTCC China Touring Car Championship in Zhaoqing, Guangdong Province, officially ended the super production car group, and Han Han of Shanghai Volkswagen 333 Team won the championship and won the championship of the turbocharged group.
On June 3, 2012, Han Han won the championship in the super mass production group of CTCC Zhuhai Station.
On July 8, 2012, Han Han won the championship in the 2012 Great Wall Lubricant CTCC China Touring Car Championship Ordos Station.
On July 23, 2012, Han Han won the championship of the 2012 "Silk Road Spring" Cup Zhangye China Automobile Rally Championship.
On the afternoon of August 19, 2012, the fifth leg of the Great Wall Lubricants CTCC China Touring Car Championship was held at the Ordos International Circuit. Volkswagen 333 Team driver Han Han overtook at the start and led the way to the championship, which was also Han Han's third championship in five races.
The 2012 Beijing Huairou China Rally Championship came to a successful conclusion on August 26, with Subaru rally drivers Han Han and Sun Qiang winning the third place in the competition.
The 2012 FIA Asia Pacific Rally Championship Xiaofu Cup China (Longyou) Rally ended on October 28, and Han Han won the second place among domestic drivers, thus defending the annual champion of the China Rally Championship one stop ahead of schedule.
The 8th and final stop of the 2012 Great Wall Lubricants CTCC China Touring Car Championship ended at the Shanghai International Circuit on the 4th. In the super production class, Han Han of Shanghai Volkswagen 333 Team won the second place, thus surpassing his opponent in the annual standings with 67 points and winning the Drivers' Championship of the Year. This is the second time he has won the annual track and rally national championships after winning the China Rally Driver of the Year championship last week.