Twin vs Leshan

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Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell.

In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a singleton, and the general term for one offspring of a multiple birth is a multiple. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgangers.

Source: Wikipedia

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Leshan, formerly known as Jiading or Jiazhou, is a prefecture-level city located at the confluence of the Dadu and Min rivers in Sichuan Province, China. Leshan is located on the southwestern fringe of the Sichuan Basin in southern Sichuan, about 120 km (75 mi) from Chengdu.

As of the 2010 census, its population was 3,235,759, of whom 662,814 lived in the built-up (or metro) area made of Shizhong district, as Wutongqiao and Jinkouhe districts are not conurbated yet.

Source: Wikipedia