Revising the provisions of Point b, Section 1, Part III of Joint Circular No. 04/2002/TTLT/BCA-BNG of January 29, 2002, guiding the implementation of the Government’s Decree No. 21/2001/ND-CP of May 28, 2001, detailing the implementation of the Ordinance on Foreigners’ Entry into, Exit from, and Residence in Vietnam