If you have the opportunity to depart from, arrive at, or have a layover of more than 2 hours at Hangzhou Airport, there is a mystery cache waiting for you to find.
This geocache is NOT located at the posted coordinates. You will need to solve the puzzle to find the final location, which is outside the airport. International transit passengers must qualify for the 144-hour visa-free transit policy.
Hangzhou Xiaoshan International Airport (IATA code: HGH; ICAO code: ZSHC), commonly referred to as Xiaoshan Airport, is located in Xiaoshan District, Hangzhou City, Zhejiang Province, China. It is the largest international airport and a significant aviation hub in Zhejiang Province. The airport was officially opened and began operations on December 30, 2000. It operates numerous domestic and international routes, connecting to several major cities around the globe.
杭州萧山国际机场（IATA 代码：HGH；ICAO 代码：ZSHC）简称萧山机场，位于中国浙江省杭州市萧山区，是浙江省最大的国际机场和重要的航空枢纽。机场于 2000 年 12 月 30 日建成通航，拥有多条国内外航线，连接全球多个主要城市。
Every airport has its corresponding IATA code. They may help you to follow the trace of this cache:
(GCB2) [Capital] + [Pudong] - [Jiangbei] - [Xiaoshan] - [Gaoqi] - 163 = .XXX
(GCB2) [Capital] - [Pudong] - [Jiangbei] + [Xiaoshan] - [Gaoqi] + 40 = .YYY
N30° 14.XXX E120° 25.YYY
