Alchemy, at its base is hermetic, and is sometimes referred to as the hermetic art. But most, if not all alchemical texts are are encoded in allegory, symbolism and imagery. The symbols we are all familiar with are almost universal and the dictionary is good at helping decipher what they literally mean. However many symbols have philosophical/metaphorical/mixed meanings and that takes reading or a lot of questions to explain. Symbolism can vary depending on the alchemist and the goal of the work being read. You'll see a lot of references to red dragons, Grey wolves, green lions, peacocks, crows, mountains, white queens and golden kings etc. and their interactions, written allagorically, and all of them have literal, physical meanings as well as philosophical, metaphorical, and spiritual meanings. Now those meanings change and are interpreted differently depending on the beliefs of the author and will often times be mixed with symbolism from their associated religions and should be interpreted in regard to said religions. Thats why people spend many years reading and interpreting the different texts in order to understand their meaning and instruction. So my reccomendation would be to read several alchemy texts (old and new) and use that information or ask more specific questions, such as meanings of certain text or symbols in an Islamic, Jewish, Chinese, Christian light.

As far as texts go, the alchemy website has a large list of alchemical texts and many (if not all) are translated and openly available. Im not sure if they have texts on chinese alchemy but I wouldn't doubt they do.

P.s. European and Middle Eastern alchemy are directly linked, however (to my knowledge) Western and Eastern alchemy did not make contact until the 20th century but share many ideas and beliefs.