Thi%EF%BF%BD%EF%BF%BD%EF%BF%BDt%20b%EF%BF%BD%EF%BF%BD%EF%BF%BD%20%EF%BF%BD%EF%BF%BDi%EF%BF%BD%EF%BF%BD%EF%BF%BDn%20t%EF%BF%BD%EF%BF%BD%EF%BF%BD tại Long Biên