Chongqing Municipal Administration of Big Data Application Development issued a news release, Chongqing opened a 24-hour service hotline, to ensure that the public in the use of the process related to the problem is resolved in a timely manner. "Yu Kang code" line (24-hour hotline):

023-67724648, 023-67724708

023-67724758, 023-67724918

023-67724938, 023- 67725038

023-67725078, 023-67725138

023-67725148, 023-67725178

023-67722051, 023-67722059

023-67722107, 023- 67722115

023-67722203, 023-67722379

023-67722467, 023-67722507

023-67722930, 023-67722954.