Zhaoqing
Residents from Guangzhou , Shenzhen , and the other cities of the Pearl River Delta visit it for weekend excursions . 
<triplet> Guangzhou <subj> Pearl River Delta <obj> part of <triplet> Shenzhen <subj> Pearl River Delta <obj> part of <triplet> Pearl River Delta <subj> Guangzhou <obj> has part <subj> Shenzhen <obj> has part