T%EF%BF%BD%EF%BF%BD%20v%EF%BF%BD%EF%BF%BD%EF%BF%BDn,%20thi%EF%BF%BD%EF%BF%BD%EF%BF%BDt%20k%EF%BF%BD%EF%BF%BD%EF%BF%BD%20x%EF%BF%BD%EF%BF%BDy%20d%EF%BF%BD%EF%BF%BD%EF%BF%BDng tại Long Biên