From guangzhou airport to Hong Kong

Dear Sir/Mdm,

1) May I know is there any bus from Guangzhou Baiyun Airport to HK. I am arriving the airport around 12.15pm at 13 Jan 2018.

2) Where does the bus drop off from HK?

Annifer / Singapore

3) May I know is there any bus from HK back to Guangzhou on 16 Jan 2018 around 2pm onwards?

4) Where does the bus drop off from Guangzhou? I am staying at Holiday Inn Shifu.

Hope to hear from your soon.