Whats the point??? There is no evidence paper money can transmit the virus. It is person to person contact. Burning cash is a hysterical thing to do!! Everyone making mountains out of molehills about this Coronavirus stuff. The common flu will kill more people!!! People freak out just because there is no vaccine, thats all.
Because they think that the virus will be in the paper bill for quite some time and a person who has the virus but still doesn't knew about it can cobtaminate the paper and pass it to other people but even if the virus really gets into the paper it will die quickly but to lessen the risk they have done that which i think is good enough but of course having it quarantined is better for they will not need to burn it but takes time to do, after all it is the South Korea's way of handling virus and i think it is good rather than have none.