Min Guhong Manufacturing

1. Enter a store and pick an item that costs 10,000 won.
2. Tell the shopkeeper you’ll pay 10% more for it. (10,000 won + 1,000 won = 11,000 won)
3. After a moment, say you’ve changed your mind and ask for a 10% discount. (11,000 won − 1,100 won = 9,900 won)
4. Pay 9,900 won for the item and leave the store.