Nkeugbo na zoo ulo blocks ụmụaka bụ otu n'ime ọtụtụ ihe egwuregwu mgbochi ụlọ dị elu nke BanBao mepụtara. BanBao bụ ọkachamara na-emepụta ihe eji egwuri egwu ụlọ, na-elekwasị anya na ụmụaka's mmepe ọgụgụ isi ma mepụta usoro ihe egwuregwu mgbochi ụlọ maka ụmụaka, gụnyere ugbo na zoo ngọngọ ụmụaka.
Ihe mgbochi anụ ụlọ ihe egwuregwu ụmụaka choro ka umuaka jiri ihe owuwu wuo udi anumanu, nke nwere ike ime umuaka's aka-na ike na nweta mmụta na mmalite agụmakwụkwọ ebumnuche. N'otu oge ahụ, ihe ụmụaka ji egwuri egwu n'ugbo na zoo nke BanBao mere mara mma, na-enye ụmụ ọhụrụ ohere ịghọta agba mgbe ha na-egwu egwu. Ọzọkwa, ụmụ ọhụrụ nwekwara ike ịmụba ihe ọmụma ha gbasara anụmanụ mgbe ha na-arụ ọrụ ugbo na ihe mgbochi ụmụaka ji egwuri egwu.