panacea

灵丹妙药，万全之策  (= a perfect solution=a cure-all) + for problems

Real-time monitoring, though not a universal panacea for the problems of hotel sanitaion recently disclosed on Weibo, Chinese version of Twitter, would be a change in the right direction.

Installing security guards on buses, though not a univeral panacea for the problems of transportation security, which went viral after the bus crash in Chongqing, would be a reform in the right direction.