C66 Not Expensive

After the owner wrote the cheque, he quickly handed it over to Su Yang and said, "The money is yours, the drawing is mine." After which, he reached for the calligraphy and painting.

Su Yang grabbed the owner's wrist and said, "Don't worry."

The owner thought Su Yang went back on his word and quickly said, "You went back on your word?" This won't do. We've already agreed on it