Du Wei, a spokeswoman for South Beauty Group, would not confirm whether Zhang had emigrated when contacted by China Daily on Monday.
"It's a private issue," she said, adding that Zhang is currently receiving medical treatment in China.
Her emigration was initially exposed by Chaoyang District People's Court, which tried to summon her in September in a lawsuit over an economic dispute.
The court was unable to find her and police said her hukou — household registration — had been canceled on Sept 17.
Chinese citizens' hukou can be canceled only if they join the army, emigrate or die.
Zhang famously expressed her opposition to emigration on a debate show on Hong Kong's Phoenix TV in 2010, saying that wealthy Chinese who emigrate have taken considerable wealth out of China with them.
"I'm Chinese and the blood in my body is Chinese," she said, adding that she had refused an invitation from Canada to immigrate there in 1991, after she worked there for years. "I will be loyal to my country because I'm a Chinese," she said.
Sexy model shines at Guangzhou Auto Show Hyundai Motor stage