Jimmy mentions that the Chinese Ministry of State Security uses capsules containing potassium cyanide and bleach for their agents to use in the event of capture. The reason for adding the bleach as that while on its own potassium cyanide is very deadly it can take up to 30 minutes to cause death, leaving the possibility of the agent to be treated and saved. But when cyanide is mixed with bleach it undergoes a chemical reaction that turns it into cyanogen chloride, which is even more toxic and kills very rapidly, usually in less than two minutes.
Knight mentions being Chinese and Dutch. Russell Wong, who plays Knight's father, shows to be the offspring of a Chinese-American father and a Dutch-American mother.
Russell Wong & Katrina Law also played father & daughter in The Oath
Russell Wong and Katrina Law each appeared in a version of "Hawaii Five-0," Hawaii Five-O (1997) and Hawaii Five-0 (2010) respectively.