The first day known as wan suk dip features lively processions as rocket teams transport the rockets in a procession and perform a ritual to pay homage to chao pu, the spirit of the city pillar. Each is escorted by a colouful dance troupe.
The second day is the rocket procession day. Modern-day rockets are mounted on vehicles or traditional carts to be drawn in the parade. The “Bang Fai” rockets come in different sizes, packing with one to 120 kilograms of nitrate. The rocket-making technicians play a vital role in deciding the right amount of nitrate to be mixed with the charcoal. With the wrong formula, a rocket could blow up prematurely before it is launched high into the sky. The rocket cylinder is usually made from the bottom half of the bamboo plant.