Pour in the water in a pot and bring to boil.
Now, add 1/2 tsp salt, laurel leaves, and whole peppercorn. Then put the pork belly into the pot. Simmer for 1 hour.
After 1 hour, transfer the pork belly onto a flat surface and use a fork to lightly stab the pork belly's skin.
Now, halved each pc of the pork belly. Then, rub each pork belly with the remaining salt.
Transfer all the pork bellies onto a wire rack, and let it stand in front of an electric fan to dry the remaining liquid in the meat for 1 hour.
After 1 hour, heat oil in a pan, then fry the pork bellies over medium heat for 3 minutes while covered.
After 3 minutes, turn the meat over to cook the other side. Fry it again for 3 minutes. Do the same procedure with the remaining pork bellies.
Serve with vinegar and enjoy!