Why was the Indian currency burnt at the time of the Indo-Chinese war in 1962?

In 1962, china assaulted on India and was possessing indian grounds.

On nov. 1962, at 12 PM, there was bank chief and different representatives in the sbi bank of Tejpur(Assam). The bank director and other consumed all indian cash notes even they needed to decimate all cash of the bank. They needed to crush currencies so they gathered all coins in packs and took the sacks at closest lake and tossed the sacks into the lake.

It was occured on the grounds that the bank administrator and different representatives felt that chinese soldiers could arrive at Tejpur city whenever and they didn't need that anyway chinese armed force get indian money. They needed to spare indian cash from going in China's grasp.