No Reserve (Chinese: 巾幗梟雄之諜血長天), also known as Rosy Business III, is a 2016 Hong Kong espionage television drama serial created and produced by Lee Tim-sing for TVB. It is the third installment of the critically acclaimed Rosy Business period drama series. Previous installments include 2009's Rosy Business and 2010's No Regrets. Set primarily in Canton, China (now known as Guangzhou) during the Second Sino-Japanese War, the show's story follows the affairs of Chinese spies and their entanglements with underground triads and the Empire of Japan. Wayne Lai stars as special government agent Kong Sheung-hung. Co-starring is Myolie Wu as Kong's partner Cheung Kei-sang, and Edwin Siu as their rival, Chau Sai-kia.