Hong Kong’s wealthiest man, Li Ka-shing, is putting his tallest building in the city up for sale, garnering bids from several Chinese buyers, South China Morning Post reports. Li’s Cheung Kong Property Holdings Co. has put The Center on the market with little fanfare for six months, according to a property agent involved in the deal. A handful of keen buyers are bidding on the 73-storey tower, valued at HK$35 billion, the agent said. At that price, The Center will be Hong Kong’s most expensive real estate transaction. Analysts point to China’s state-owned companies with deep pockets as the most likely buyers for the tower in downtown Central, which has 1.2 million square feet of office space, 13,000 square feet of retail space and 402 car parking lots.