Last month I went to the Memories of King Kowloon-Tsang Tsou Choi (九龍皇帝的文字樂國-曾灶財), and I was thinking this kind of "treasure" will never be preserved by government. But today, passed by a pole with Tsang Tsou Choi's calligraphy on it in Tsim Sha Tsui are well covered my acrylic plastic, which proves I was wrong. I'm glad that the HK government has done something cool and right (you might say it has been preserved for a period of time already but I was in HK at that moment so I didn't know).
Here is the press release from the relative authority