Place the chai poh in a mixing bowl. Cover with clean water and let it soak for about 3 minutes. Drain off the water completely and squeeze out the water as much as you can. Finely chopped them. Sprinkle with 1 Tbsp of sugar and toss to mix
Preheat a wok or skillet over high heat (without oil). Add pork belly and stir fry for about 5 minutes. The fat will render out. Add garlic and stir fry for 30 seconds. Add chili (if using) and stir fry for another minute until the chili slightly limp and blistered a bit
Add chai poh and stir fry for another 5 minutes. Add seasoning. Stir to mix everything. The final taste should be sweet with just hint of savory from the chai poh. Remove from the heat and serve immediately
Notes
If you don't have kecap manis, substitute with dark soy sauce and add one more tablespoon of sugar or to your taste.