Originally Posted by HkCaGu

Under current rules, applying for the Home Return Permit requires documents of Chinese nationality. For most HKers, that proof is the SAR passport. However, the Chinese nationality for HKers was not clarified until 1996 when the NPC defined all the details. Many HKers, especially those who moved overseas, do not have to have the SAR passport and already held the HRP before the 1990s. They continue to renew their HRPs without the need to have the SAR passports.

Originally Posted by GoofyG28

My question, however, is this:
I will be going to HK next month, then taking a bus to Guangzhou. So I'll be using my HRP when entering China. From what I understand, the HRP is mainly for border crossing on land (between HK/Macau and China). But I'll be leaving China via the Guangzhou airport, taking an international flight to Singapore. Will I run into any problems using my HRP at the departure immigration? I'll definitely have my US passport on me, since I need to show a passport at the airline check-in counter.

I spent a long time researching this, but the closest answer I got was from this: http://hongkong.geoexpat.com/forum/24/thread180641.html

Thanks in advance!