大熊猫是我国的特有物种，1983年以前，大熊猫作为外交友谊的象征被赠送给其他国家。1983年和1991年，我国*两次修改政策。现在，中国*的动物园可以将大熊猫成对借出，借期10年。因此，所有外借的大熊猫在外借到期后都需要归还。在借出期间出生的幼仔也属于中国。小熊猫需要在四岁前归还，以便进行繁殖计划，扩大基因库。下面这个数据可视化展现了我国租借给外国动物园的66只熊猫的数据。
Before 1983, pandas were gifted to other countries as diplomatic symbols of friendship. In 1983 and 1991, the * modified the policy twice. Nowadays, zoos outside China could loan pandas in pairs over a 10-year-loan. Therefore, all pandas on loan need to return when the loan expires. Any cubs born during the loan period belong to China too. Cubs need to return before they turn four, for a breeding program to expand the gene pool. This data visualization below shows the data of 66 pandas that China has leased to foreign zoos.

每一条柱状图代表了一只熊猫，竹叶向左偏代表雄性，反之代表雌性，而连线则代表繁衍的后代。竹叶的节点代表了送达国外时的年龄，黑色和白色的交界代表了每只熊猫现在的年龄，而柱子的上边界为预计返回中国的时间。横轴的文字代表了送达的国家和具体动物园的名称。
Each bar represents a panda, with bamboo leaves to the left for males and vice versa for females, and connecting lines for breeding offspring. The nodes of the bamboo leaves represent the age at the time of delivery abroad, the junction of black and white represents the current age of each panda, and the upper border of the column is the expected time of return to China. The text on the horizontal axis represents the country of delivery and the name of the specific zoo.

下方的地图分为了欧洲、亚太地区和美洲地区，并通过连线表明了每只熊猫送达的具体位置。可以看到我国送达欧洲的熊猫最多，共10个国家28只熊猫。
The map below is divided into the Europe, Asia Pacific and America regions, with connecting lines indicating the exact location where each panda was delivered. It can be seen that our country has sent the most pandas to Europe, with 28 pandas in 10 countries.

数据可视化网址：
https://public.tableau.com/zh-cn/gallery/giant-pandas-overseas?tab=featured&type=featured