What kind of strategy did he use in this case?

I want to know what kind of writing strategies that this man used on wordpress.
This man's wordpress blog's language and market is South Korean.

His blog's daily visitor is about 100,000~150,000.
And his monthly adsense income is 20,000$ ~ 30,000$.(He shows his accounts)

from this number, Ctr and CPc looks common.(Korean CTr and CPc is lower then Us. CTr 1~2%, CPC 0.3$ is common)

Of course, he never show his website address.

But, He said, in South Korean Blogger Community, that he writes…

What kind of strategy did he use in this case?