Lishenflex dị ka onye ọkachamara ụgbọ mmiri na-ekekọta eriri ratchet na-emepụta na onye na-ebubata ya na China, ụgbọ mmiri niile na-ejikọta eriri ratchet agafewo ụkpụrụ asambodo ụlọ ọrụ mba ụwa, na ị nwere ike ijide n'aka nke ọma. Ọ bụrụ na ịhụghị ụgbọ mmiri Intent nke gị kee eriri ratchet na ndepụta ngwaahịa anyị, ị nwekwara ike ịkpọtụrụ anyị, anyị nwere ike ịnye ọrụ ahaziri iche.