Today is the Chung Yeung festival, it is the final holiday this year before Christmas. The Chung Yeung Festival falls on the ninth day of the ninth lunar month (which happens to be today).
Similar to the Ching Ming Festival in spring, the Chung Yeung Festival is when entire families congregate at cemeteries to engage in age-old practices of ancestor worship.
It is also popular to hike to the city’s high points on this day, as it’s believed this will bring good luck. This custom is rooted in a Han dynasty legend in which a soothsayer advised a man to take his family to high ground for the ninth day of the ninth moon. The man complied and the next day discovered that all the inhabitants of his village had been slaughtered, while he and his family had been spared by leaving for the hills.
So which hike could you be doing today? I would recommend one of my favourite hikes:
1) Pat Sin Leng (New Territories) which is Wilson Trail Stage 9
2) Wilson Trail Stage 4 (Kowloon) is an amazing hike too, as you’ll first climb a hill to see Hebe Haven and Sai Kung, before you turn and then suddenly Kowloon unfolds in front of you:
3) It is quite far away to travel to Sai Kung (at least from where I live) but the MacLehose Trail Stages 2 and 3 are amazing. The beaches make you believe that you could be in Hawaii!
4) Hiking in Lantau is beautiful too. An easy hike is from Tai O to Tung Chung (or in reverse) but I always enjoy going to Tai O. This small fishing village is such a stark contrast to Hong Kong!
5) If you fancy a longer hike, I would recommend hiking from Shek Pik to Tai O and to visit the famous infinity pool close to Tai O.
bluebalu 
i really want to try the infinity pool hike, i heard it’s amazing ! some day soon hopefully !