    null,
                null
            ],
            "edgeSymbolSize": 10,
            "links": [
                {
                    "source": "\u7ed3\u70b91",
                    "target": "\u7ed3\u70b92",
                    "value": 2
                },
                {
                    "source": "\u7ed3\u70b92",
                    "target": "\u7ed3\u70b93",
                    "value": 3
                },
                {
                    "source": "\u7ed3\u70b93",
                    