Complex sentence: The decicion turns out for the worst as Liu Chong was soon assasinated by "Three Boat", meaning Pang Tong's plan failed as Pang Tong's ultimate goal is the rise of Liu Chong using Cao Cao's fall as leverage.
Split into simpler sentences: The decicion turns out for the worst as Liu Chong was soon assasinated by "Three Boat". This means that Pang Tong's plan failed as Pang Tong's ultimate goal is the rise of Liu Chong using Cao Cao's fall as leverage.