I am staying at Huiao Hotel at Tienhe District. Is there a shuttle bus from the Guangzhou airport to the hotel

There is no shuttle bus from the airport to your hotel and you need to transfer.
From the airport, you can take the shuttle bus line 6B to Haitao Hotel. Then walk to Xiancun Station, just several minutes from from the Haitao Hotel. From the Xiancun Station, you can take the bus line b15 to BRT Huangcun Station. Get off the bus, you need to pass a footbridge to reach Zhongshan Avenue to your hotel.