Bian's guess was right because the kidnapper called them again one hour later, and they asked for a ransom of one billion. The kidnapper asked Mumut to bring the money by herself and put the money in several shopping bags from the Adelaide Mall and took it to the mall at five o'clock this afternoon.
They let her be late for one or two minutes if necessary, and they had promised to call her again for further instructions. Adelaide Mall was a busy mall, so people would not suspect that they had a transaction there. If Mumut was late or they noticed she was being accompanied by someone else, the kidnapper would not hesitate to hurt Bima.