A former chairman of publicly listed property developer Grand Field Group Holdings and his wife face fraud plot charges with four senior members of two other firms over the acquisition of a joint venture in Chongqing . Wayland Tsang Wai-lun, 48, and his wife, the group's former executive director Nancy Kwok Wai-man, 46, are facing two counts of conspiracy. They have been charged with Li Tai-pang, 55, former representative of Sino Richest Limited; Charles Cheng Kai-ming, 60, executive director of the locally listed financial services provider Upbest Group; George Li Kwok-cheung, 46, executive director of Upbest; and David Wong Wai-kwong, 49, independent non-executive director of Upbest, the Independent Commission Against Corruption said. Grand Field said in March that Tsang and Kwok were being investigated by the anti-graft watchdog over their involvement in the firm's HK$63 million mainland gas pipeline deal of 2002. The couple resigned from their posts on July 10. Tsang is also charged with one count of conspiracy to publish a false statement. All will appear in Eastern Court tomorrow. The charges allege that Sino Richest made an agreement with a mainland company to form a joint venture to develop gas pipeline business in Chongqing. Grand Field later acquired Sino Richest's interest in the venture, with Upbest as its financial adviser. Tsang, Kwok and Li Tai-pang allegedly conspired with others to defraud Grand Field shareholders and officers of the Hong Kong Stock Exchange, between February 1 and September 30, 2002. They allegedly made false statements to the stock exchange, saying Grand Field intended to acquire an interest in a business to develop and build gas pipelines in Chongqing, and wanted to issue 315 million new shares. Believing its listing rules had been followed, the exchange allowed Grand Field to issue the new shares. Tsang, Kwok, Cheng, Li Kwok-cheung and Wong are charged separately of conspiring with another person to defraud shareholders and exchange officers. The six accused are on ICAC bail, pending their court appearances.