In a large container, marinate chicken thighs with soy sauce, shaoxing wine, dark soy sauce, sesame oil, chinese brown sugar, slices of lemon, and water. Let them marinate for 2-24 hours.
Heat a pan with a bit of oil over medium heat.
Pierce the marinated chicken thighs and add them to pan, skin side down.
Cook for 5 minutes on both sides.
Pour the remaining marinade with the lemon slices and brown sugar slabs onto the chicken thighs in the pan.
Cover the pan and simmer over low heat for 20 minutes.
Cook the chicken thighs uncovered until the sauces gets thick and sticky.
Garnish with scallions and serve atop a bowl of Jasmine rice.