Shanghai Metro: Due to a failure on Line 3, intermittent transfer restrictions may be implemented at interchange stations between Lines 3 and 4.

Sina Finance News on March 31st, @Shanghai Metro shmetro issued a notice on March 31st: Due to a malfunction on Line 3, temporary transfer restrictions may be implemented at transfer stations shared by Lines 3 and 4, please consider taking alternative subway lines for transfer. The frequency of nearby surface buses has been increased, it is recommended that passengers choose surface buses for transportation.