XPath exlude节点及其后代

I have an XML like this:

我有这样的XML：

<Root xmlns:test1="https://www.test1.com" xmlns:test2="https://www.test2.com" Attr="root">
  <test1:Child1 Attribute1="c1" Bttribute="c2" Cttribute="c3">
    <child11 Attribute11="c11">Element11</child11>
  </test1:Child1>
  <test2:Child2 Attribute2="c2">
    <child21 Attribute21="c21">
        <child211 />
        <child212 />
        <child213 />
    </child21>
    <child22 Attribute22="c22">Element22</child22>
  </test2:Child2>
  <test2:Child3 Attribute3="c3">
    <child31>Element31</child31>
  </test2:Child3>
</Root>
<Root xm