Mysterious Sounds from Another World

"Now, your life depends on winning or losing this game." The gray-haired old man took out a coin. "It's a very simple game. The coin will be tossed ten times. If you can guess correctly ten times, you will win." The old man smiled kindly at Han En, his eyes full of amusement. Han nodded absently. For the first time, the coin passed over his head and fell straight on the back of the old man's hand. It's the front. "Front." "Good luck." Due to the restrictions of the rules, the old man could only tell the truth. The second time, the other way around. "The other side." Heads, heads, tails, heads, tails, tails, heads, tails. For the next eight times, Han En incredibly got all the answers correct. The old man supported his gradually collapsing body, straightened his back and sat on the wooden chair, and asked puzzledly: "How on earth did you do that?" "Maybe it's because of the mysterious voice." That's right.