Ngh%EF%BF%BD%EF%BF%BD%EF%BF%BD%20thu%EF%BF%BD%EF%BF%BD%EF%BF%BDt,%20l%EF%BF%BD%EF%BF%BDm%20%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BDp%20kh%EF%BF%BD%EF%BF%BDc tại Long Biên