Li Deyu summoned Zhang 's emissary at Chang'an and informed him that it would merely damage his relationship with the imperial government if he accepted the Mount Wutai monks .
Li Deyu encouraged Emperor Wuzong to suppress Buddhism .
Li Deyu , who encouraged Emperor Wuzong to suppress Buddhism , summoned Zhang 's emissary at Chang'an and informed him that it would merely damage his relationship with the imperial government if he accepted the Mount Wutai monks .