Through storing the path of internal nodes, LSEQ enhanced querying efficiency and avoided structure-joining.

LSEQ编码通过记录非叶节点的路径，在节点查询中避免了结构连接操作，提高了查询效率。

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Moreover, LSEQ supported the representation of ancestor-descendant relationship, parent-children relationship and sibling relationship between any two nodes.

同时支持节点祖先后代关系，父子关系和兄弟关系的表示。

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