This is a multi-step stratagem.
Gao Guang originally wanted to say "lure the tiger out of the mountains," but to do that, he first needed to know where the tiger was.
So in order, it should be "leniency to catch, startling the snake by beating the grass, luring the tiger out of the mountains, and finally trapping the thief by closing the door."
He utilized four tactics from the Thirty-Six Stratagems, each distinct, and only by combining them could he achieve the effect Gao Guang wanted.
"Leniency to catch" is the overall guideline.
The specific detail is to now send people into Amanula's territory to start searching for Yuri's whereabouts. By doing so, Amanula's watchers will definitely take notice, making Yuri aware that his location has been exposed—this step is "startling the snake by beating the grass."
