Create 13.choose-graphspace.md (#1195)

docs-2.0/nebula-explorer/13.choose-graphspace.md

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+# Choose graph spaces
+
+You must first choose a graph space and then query and analyze data with Explorer. This topic introduces how to choose a graph space.
+
+## Prerequisite
+
+You have connected to Explorer. For details, see [Connect to Explorer](deploy-connect/ex-ug-connect.md).
+
+## Steps
+
+After connecting to Explorer, the system automatically displays the graph space selection page. You only need to select the target graph space.
+
+![Create_graphspace](https://docs-cdn.nebula-graph.com.cn/figures/create-graphspace_en.png)
+
+If you do not choose a graph space in time after connecting to Explorer, follow the below steps to choose one.
+
+1. In the navigation bar on the left side of the Explorer page, click the graph space icon ![graphSpace](https://docs-cdn.nebula-graph.com.cn/figures/nav-graphSpace.png).
+
+2. Choose the target graph space.
+
+  !!! note
+
+        You can select the same or different graph spaces multiple times, and each selection creates a canvas for the corresponding graph space.