It was a 'seven dots' tile.
"Pong!" When Jiang Zhuoheng saw this, he swiftly revealed two identical 'seven dots' tiles from his deck.
Zhou Shuang looked over and realized which tile she had discarded. Her eyes bulged and she shook her head. "No, no, no. I discarded the wrong tile. I wasn't going to discard this."
She said as she tried to take the tile back, but Jiang Zhuoheng was swifter than her.
Jiang Zhuoheng held the 'seven dots' tile in his hand.
Zhou Shuang frowned. She looked at him and pleaded. "Ah Heng, you're the best."
Afraid that Jiang Zhuoheng would return the tile to Zhou Shuang, Yan Rusheng interjected. "Zhou Shuang, don't be shameless."