In a legend originating in the state of Qi during the pre-Qin period, immortals live in a palace called the Penglai Palace which is located on Mount Penglai.[3] In Chinese mythology the mountain is often said to be the base for the Eight Immortals (or at least where they travel to have a ceremonial meal), as well as the illusionist Anqi Sheng. Supposedly, everything on the mountain appears pure white, while its palaces are made from gold and silver, and jewels grow on trees. There is no agony and no winter; there are rice bowls and wine glasses that never become empty no matter how much people eat or drink from them; and there are enchanted fruits growing in Penglai that can heal any ailment, grant eternal youth, and even resurrect the dead.
Anqui Sheng: Anqi Sheng (Chinese: 安期生; Wade–Giles: An-ch’i Shêng) was a Chinese immortal and wizard, said to be already over 1,000 years old at the time of Qin Shi Huang, the first emperor.
He was said to inhabit Mount Penglai. Anqi was said to have been a Taoist wizard, able to render himself visible or invisible at his pleasure. According to the Daoist hagiography Liexian Zhuan, Qin Shi Huang spoke with him for three entire days (including nights), and offered Anqi jade and gold. Qin Shi Huang feared death, and sought immortality, without success. In 219 BC, he sent an expedition under Xu Fu to find Anqi and to bring him back, along with the elixir of life, which grants immortality or eternal youth. When Xu Fu reported that a sea creature blocked the expedition's path, Qin Shi Huang sent archers to kill it. In 210 BC, Xu Fu continued his journey. Legend says he found Japan instead, proclaimed himself king, and never returned
TLDR;
Area Zero is Mount Pengali, Terapagos is ‘Wizard’ illusionist name Anqui, and Heath is Xu Fu a Alchemist sent by an emperor to bring back the elixir of life, there’s even a sea creature that stopped their expedition, like how Great Tusk or Iron Treads stopped Heath.
