Photo taken on Oct. 19, 2018 shows the ticket office for the Hong Kong-Zhuhai-Macao Bridge shuttle buses, in the Macao frontier inspection building of the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)

Photo taken on Oct. 19, 2018 shows the departure channels in the Macao frontier inspection building for the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)

Photo taken on Oct. 19, 2018 shows the departure channels in the Macao frontier inspection building for the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)

Photo taken on Oct. 19, 2018 shows the departure channels in the Macao frontier inspection building for the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)

Photo taken on Oct. 19, 2018 shows the departure channels in the Macao frontier inspection building for the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)

Photo taken on Oct. 19, 2018 shows the departure channels in the Macao frontier inspection building for the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)

Photo taken on Oct. 19, 2018 shows the departure channels in the Macao frontier inspection building for the Hong Kong-Zhuhai-Macao Bridge in Macao, south China. The bridge will start operation on Oct. 24, further integrating cities in the Pearl River Delta. (Xinhua/Cheong Kam Ka)