Hong Kong: The alleged lover of Asia's richest businesswoman defended his claim yesterday to her multibillion-dollar estate in a trial that has captivated Hong Kong, saying the two of them shared a life of feng shui, cooking and playing with model helicopters.

Businesswoman Nina Wang was one of the territory's most colourful people, known as "Little Sweetie" for her girlish outfits and pigtails. She died at age 69 of cancer in April 2007.

In his second day of testimony, 49-year-old feng shui adviser Tony Chan Chun-chuen said he and Wang were lovers and that she left him her fortune in an October 2006 will.

But the Chinachem Charitable Foundation, set up by Wang and her late husband, holds a competing will dated July 2002.

Chan said he and Wang shared many interests, including feng shui, the traditional Chinese practice of improving fortunes by actions like the placement of objects.

"We played every day. We shared many activities every day. Feng shui was one of our interests, but we also liked to play with model helicopters. We cooked together, we travelled together," he said.

Chan said he advised Wang to dig holes at properties owned by her husband's company in 1992 to improve her luck.

He testified on Wednesday that his affair with Wang was already ongoing when his wife was pregnant with their eldest son.

Wang inherited her husband's fortune after an eight-year court battle against her father-in-law.