SINGAPORE - The High Court has frozen the local assets of the wife of former China tour guide Yang Yin after a one-hour pre-trial conference on Monday.

However, Madam Weng Yandan, 34, left Singapore in September and it is unclear whether she even has any assets in Singapore. Her husband Yang Yin's assets in Singapore and overseas were frozen by a separate court order since August.

Yang is being sued in the High Court by Madam Hedy Mok, the niece of widow Madam Chung Khin Chun, for manipulating the 87-year-old widow for his own personal gain. Madam Mok is seeking damages which has yet to be assessed by the court.

The 40-year-old Yang met Madam Chung in 2008 while on a private tour in Beijing. He moved to Singapore in 2009 after obtaining an Employment Pass and moved in with the widow at her $30 million Gerald Crescent bungalow. He subsequently became a permanent resident in 2011 and his wife and two young children joined him in Singapore last year.

Yang faces multiple on-going law suits. Besides the court case on Monday, he also faces a separate High Court suit by Madam Mok who is seeking to terminate his Lasting Powers of Attorney (LPA) over the widow on grounds that he abused his powers. The LPA granted in 2012 gave him control over the widow's wealth and property, including the bungalow.

The police have also charged Yang in court for allegedly faking 331 receipts for music lessons and painting purchases from 2009 to 2014. The receipts were allegedly fabricated to give the impression to the authorities that his firm, the Young Music and Dance Studio, received about $450,000 in payments so that he can obtain permanent residency. He is now under police custody and the court has denied him bail.

This week, the Family Court is also expected to make a decision on a court application by the Office of Public Guardian on whether Madam Chung has the mental capacity to revoke the LPA she granted to Yang.