Five things we're all wondering about 1 Beijing relaxes rules on investing in Hong Kong shares ... instead of just overpriced watches and jewellery, mainlanders can now buy overpriced stocks. 2 Plastic bag levy proposed for supermarkets ... next on the government's environmental agenda, tax the plastic buns at the Cheung Chau festival. 3 Police ban traditional martial arts weapons ... we heard they even jailed some poor old guy in Mong Kok just because he was crouching like a tiger. 4 DAB chief suggests Tiananmen Square incident was not a massacre ... he also thought the movie 300 just did not have enough action and fight scenes. 5 Man fined for HK$5,000 for posting porn link online ... if he was smart, he would have printed it in a university newspaper, right?