HING finds that his old friend has a very dutiful son and he is unhappy for PANG didn’t inherit his Chinese medicine business. HING asks LAI to work and learn in his pharmacy. All staff asks for day off when LAI comes to work at the pharmacy. HEI is sick as well and LAI has to take up all the works. However, HING returns after his afternoon nap to discover that all the works are done…