C66 The Succession of the Throne
Dongyun Kingdom's Imperial Capital.
After Bai Langyu received the antidote from Doctor Fu, he immediately rushed back to the Imperial Capital. During this period of time, all sorts of assassinations and obstructions were not mentioned, but he still managed to return to the Imperial Palace safely.
... "One of the poisons in the mixed poison is concocted by Master. The key is the wood sandalwood