The disgraced top Chinese official Bo Xilai is now being accused of paying actress Zhang Ziyi to have sex with him on a dozen occasions over the last five years. Anti-Beijing website Boxun on Monday quoted sources as saying that Zhang is being investigated by Chinese authorities and has been barred from leaving the country.

According to Boxun, the two met in 2007 through Xu Ming, the founder and chairman of Dalian Shide Group and purported financier of the disgraced official. Xu paid 6 million yuan (around W1.1 billion) a night to have sex with Zhang and had her entertain Bo as well for 10 million yuan. Zhang had sex with Bo on more than 10 occasions and Xu paid the actress for the favors, according to Boxun.

Bo Xilai (left) and Zhang Ziyi

Zhang and Bo met in secret locations including Xu's private resort in Beijing. Zhang also allegedly slept with two other high-ranking Chinese government officials after being introduced to them through Xu. Boxun said their identities would be revealed later.

Citing a report that Boxun says was compiled by Chinese investigators, the website said the actress has five to six rich boyfriends and reportedly earned 700 million yuan over the last decade through prostitution, including 180 million yuan from Xu.

Earlier Boxun said Xu had spent the night with Zhang aboard his yacht in Hong Kong before he was arrested by Chinese authorities. He was in Hong Kong on a stopover on his private jet from Singapore to Beijing. Zhang allegedly called Xu the day before his arrest in mid-March begging him to marry her.

But Zhang on her social networking site on Tuesday morning denied the allegation. Zhang, who hails from Beijing, is one of China’s top actresses and made her film debut in the 1999 movie "The Road Home" by Zhang Yimou. She has since appeared in numerous films and came to wider international attention with "Crouching Tiger, Hidden Dragon."

Boxun is a website set up by an anti-Beijing activist in North Carolina and has been reporting on the Bo Xilai scandal since February. It has a reputation for mixing fact with fiction by often basing its reports on rumors.