This empty range can be returned if the text container is empty or when all text is scrolled out of view.

如果文本容器为空或者所有文本都已滚动到视图之外，也会返回空范围。

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Conclusion The disease pathogenesis is essential empty and out solid, empty of spleen and kidney is reason, hot-humid and blood stasis is outer phenomenon.

结论本病病机为本虚标实，脾虚、肾虚为本，湿热和瘀血为标。

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Conclusion The disease pathogenesis is essential empty and out solid, empty of spleen and kidney is reason, hot-humid and blood stasis is outer phenomenon.

结论本病病机为本虚标实，脾虚、肾虚为本，湿热和瘀血为标。

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