After my campaign been optimized by Tsai Yi, my ads no longer showing to unrelated people. This can prevent my ads from targeting wrong audience. This can actually increase the conversion rate as people who sees my ads are the right audience.
Tsai Yi constantly adding more unrelated group of people into exclusion to improve the accuracy of the targeting method. This can also prevent budget wastage. And we will target our loyal fans, trigger them to click the ads, increase the conversion rate.