Storm in a Cocoon

After telling KA-YEUNG that the late HAU-YEE mentioned of her husband's misconducts, BING-BING intends to report it to the police, but is stopped by KA-YEUNG as anyone near HAU-YEE might be the suspect. KA-YEUNG then learns from CHOR-KAU that CHENG CHEONG once cursed HAU-YEE in front of her as they were business rivalries, and silk farms often had price disputes with HAU-YEE. Moreover, PIK-WAN constantly argued with HAU-YEE. On top of that, CHOR-KAU even points out that both WING-CHEUNG and KWOK-LEUNG are very malevolent. Having found out that PIK-WAN meets up with CHENG CHEONG, BING-BING suspects that CHENG CHEONG has bribed PIK-WAN. Out of the blue, PO-CHING appears at HAU-YEE's funeral, revealing that HAU-YEE used dirty tactics to do business. BING-BING alleges PO-CHING is the murder suspect as he had already returned to POON's Village the night HAU-YEE died. So KA-YEUNG tries to sound PO-CHING out, and also carries out a body check-up for him. BING-BING takes out a dose of Chinese medicine which is used to cure angina, and she claims that it has the same scent as those she smelled from PO-CHING. Having smelled all the medicinal herbs from the dose, KA-YEUNG instructs BING-BING to buy all the perilla leaves from the pharmaceutical stores nearby. However, he doesn't disclose his reason...