Career
She is currently based in Goyang, Gyeonggi-do, competing for the Goyang City Government Sports Club. She also surpassed the world record, which was set by herself in May 2006 in Wonju, of Korea, by one kilogram. Mu Shuangshuang, who lifted 319 kg in overalls as well, ranked second because of bodyweight, but broke the record an attempt earlier.
She broke the world records in the snatch with 140 kg, in the clean and jerk with 186 kg, and combined with 326 kg.
In February 2012, Jang announced the launch of her new foundation, Jang Miran Foundation, and stated that the mission of the Jang Miran Foundation is " young athletes in minor sports."
After failing to get a medal in the 2012 London Olympics, Jang decided to retire in January 2013, saying she wanted to focus on her foundation and continuing her education at Yong In University.