After the visit, His wife made him know that the correct answer is four, period. He said someone lied to him when he was a kid.www.ddhw.com
When he was a kid, his place had a stable for army horses. One day he saw a stallion had something between the hind legs and asked what that was. A soldier told him it was a leg. He said a house had only four legs. But the soldier said, "In order to know exactly how many legs the big animals have, you have to count them. Just like if you want to know the exact taste of a pear, you have to take a bite on it." Li said he remembers this story very well although his memory is no good. His wife said, "you were a kid at that time, people did not want to talk about it with you."www.ddhw.com