In 2014, local film Dot 2 Dot (點對點) was screened in the Hong Kong International Film Festival. The film was often described as low key, low budget and slow paced love story to the city. Amos Wong’s film explores the history and identity of Hong Kong through the encounter of a graffiti artist and a Mandarin teacher. It begins with the Mandarin teacher, newly arrived from Mainland China, discovering mysterious graffiti composed of dots at every metro station in Hong Kong. She is able to decode the graffiti by connecting the dots into meaningful imagery related to the local history of the particular neighborhood. She then comes up with her own graffiti and engages the unknown graffiti artist in a battle of graffiti riddles. It turns out that the graffiti artist is actually one of her students, who himself is a professional designer returned to Hong Kong from Canada. The movie follows both characters to explore different neighborhoods, including the quest to check out the boundary stones of the former Victoria City (維多利亞城). At the end of the film, the teacher finally realizes the true identity of the graffiti artist after visiting the westernmost boundary stone in Kennedy Town (堅尼地城). The story ends with them enjoying the peaceful sunset together at Kennedy Town ‘s praya.
Considered the capital of the former British Colony, Victoria City at the northern shore of Hong Kong island was the city’s first urban settlement. Victoria City was defined by the four “wans” (四環) or districts: Sai Wan (西環), Sheung Wan (上環), Chung Wan (中環), and Ha Wan (下環) or present’s day Wanchai. In 1903, the government erected seven stones to mark the boundary of Victoria City. The city soon expanded beyond the boundary limits and the stones became obsolete. Measured 98cm in height, tapered at the top and marked with the inscription “City Boundary 1903”, these historical boundary stones are mostly forgotten, except for history buffs who occasionally check on these urban artifacts and share their photos on the Internet. Six out of seven boundary stones survive to the present day, except the one at Magazine Gap Road in the Mid-Levels that was negligently removed by retaining wall contractors in 2007. For the remaining six boundary stones, it is possible to visit them all in a 5-6 hour hike. The hike offers hikers an interesting opportunity to walk around the old city centre, from the waterfront of Kennedy Town, halfway up the Victoria Peak and down to the Happy Valley Racecourses to the east.
Entangling roots stretch across the surface of granite walls might remind people of the Ta Prohm Temple at Angkor Wat instead of the city of Hong Kong. Commonly known as “Stone Wall Trees” (石牆樹), the urban scenery of Chinese Banyan (Ficus microcarpa 細葉榕) enrooted on historical granite walls is a unique scene in Hong Kong, especially in Central-Western District where the heart of the old Victoria City was located. In 1841 when the British first landed in Hong Kong, the bare, rocky and hilly terrain of the island posed a huge challenge for establishing a settlement. Apart from land reclamation along the coast, the British also create habitable land by constructing flat terraces on the slope of Victoria Peak (Tai Ping Shan 太平山). From the mid 19th century onwards, local granite was used to construct retaining walls for the terrace constructions. To make the relatively bare island more habitable, trees were planted across the city to provide shade and visual interest. Many foreign tree species from other British colonies such as India and Australia were brought to Hong Kong. Due to its suitability to the local climate and ability to grow rapidly, Chinese Banyan (細葉榕) were widely planted. From these banyan trees, birds and bats ate the figs and spread the seeds all over the city, and into stone joints of the retaining walls. This led to the birth of the stone wall trees.
In 1996, scholar C.Y. Jim found 1275 trees with 30 or so species on about 505 stone walls. Ficus Microcarpa or Chinese Banyan is the most common type of stone wall trees. With hardly any soil to clinch into, these banyans take the wall as their host and spread their intertwining roots on the stone surfaces. After 50 to 100 years, these banyans gradually mature into shading crowns that we see today. Many of these old stone wall trees have survived to the present day, especially in Central – Western District which contains the city’s largest concentration of stone wall trees. The emergence of stone wall trees in Hong Kong, however, was no coincidence. Perfect climate conditions, suitable stone wall surface, and some good fortune of surviving the WWII when many old trees were cut down by the Japanese for timber, all played a part in the story of stone wall trees. After WWII, stone was soon replaced by concrete for retaining wall construction. Concrete walls left little room for new trees to enroot themselves by chance. After a few generations, the resilient stone wall trees have become iconic features for various old neighbourhoods.
Despite over a century serving to improve the micro-climate of the city, cultural and ecological significance of the stone wall trees have gone unnoticed until the recent two decades. In light of the government’s intention to demolish the former Police Married Quarters (PMQ) and its iconic stone wall trees in 2005, the local resident group “Central and Western Concern Group” was formed to fight for preserving the stone wall trees as well as the heritage building. Not only has their effort succeeded in convincing the government to preserve the PMQ, they have also increased the public awareness of the stone wall trees. In 2007, the Mass Transit Railway (MTR) decided to relocate a proposed exit for the new Kennedy Town Station in order to preserve the stone wall trees at Forbes Street. The admirable effort decisively preserved the largest concentration of stone wall trees in Hong Kong. Though not all cases were success stories. In 2015, five 150-year old stone wall banyans at Bonham Road were fell sneakily overnight, just because one of their neighbouring trees toppled some time ago due to heavy rain. In name of public safety, the five healthy trees were cut down before the arrival of a potential typhoon. No detailed study was made before the decision, and that particular typhoon didn’t even come close enough to pose any thread. The hasty action of the government led to a huge loss for the community and sparked public outcry. More and more people become aware that there is an urgent need to develop a strategic plan for protecting these unique urban stone wall trees before it is too late.