[请简单介绍一下袋熊澳大利亚的]袋熊属于有袋目袋熊科，体形粗壮似熊，眼小，脸似鼠。体重可达35千克。袋熊头骨略扁平，鼻面部相对较短。所有牙齿无齿根，终生生长，尾退化。育儿袋向后开口，内有一对乳头。四肢短而有力...+阅读

Double Ninth Festival The 9th day of the 9th lunar month is the traditional Chongyang Festival, or Double Ninth Festival. It usually falls in October in the Gregorian calendar. In an ancient and mysterious book Yi Jing, or The Book of Changes, number ＂6＂ was thought to be of Yin character, meaning feminine or negative, while number ＂9＂ was thought to be Yang, meaning masculine or positive. So the number nine in both month and day create the Double Ninth Festival, or Chongyang Festival. Chong in Chinese means ＂double.＂ Also, as double ninth was pronounced the same as the word to signify ＂forever＂, both are ＂Jiu Jiu,＂ the Chinese ancestors considered it an auspicious day worth celebration. That's why ancient Chinese began to celebrate this festival long time ago.

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