Ubufakazi bokuqhuma kwe-Shenhai
Empeleni, amalambu angaqhumi awakona ukuthi isibani singaqhumi; ama-bulb asejwayelekile.
Noma ngabe i-incandescent, ukonga amandla, ukungeniswa, noma izibani ze-LED, ayimithombo yokukhanya nje futhi ayikuvumeli ukuqhuma ngokwemvelo. Afakwe ngaphakathi kwesembozo sengilazi esiwugqinsi, ehlukanisa isibani emoyeni, ukuvimbela isibani ukuthi singaqhekeki futhi sibangele imililo noma ukuqhuma.