Lapsang souchong is the pronunciation in Minnan dialect for Wuyi Mountains, which is the mountain area that produces a large family of tea in South-East China). Lapsang souchong from the original source is increasingly expensive because of increasing demand for this variety of tea, as Wuyi is a small area. The story goes that the tea was created during the Qing era when the passage of armies delayed the annual drying of the tea leaves in the Wuyi Mountain. Eager to satisfy demand, the tea producers sped up the process by drying the leaves over fires made from local pines. According to
Abelian variety of an abelian variety is necessarily commutative and the variety is non-singular. An elliptic curve is an abelian variety of dimension 1. Abelian varieties have Kodaira dimension 0. In the early nineteenth century, the theory of elliptic functions succeeded in giving a basis for the theory of elliptic integrals, and this left open an obvious avenue of research. The standard forms for elliptic integrals involved the square roots of cubic and quartic polynomials. When those were replaced by polynomials of higher degree, say quintics, what would happen? In the work of Niels Abel and Carl Jacobi, the answer was formulated: