Followed by the old 2
Followed by the old 3
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1 It's Lao Mo. ...
Accelerated business collection and delivery system (adopted by the United States post office)
CDBA
DBAC
Baidu (the world's largest Chinese search engine)
Guge
Sina
Sohu
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Interconnection network
Sichuan(Province)
Hubei(Province)
Hunan
Henan(Province)
Hebei Province
34 provinces
Take your time ~ quack