I hadn't seen the website of the Fung Ying Seen Koon in Hong Kong for quite a long time. Their "Daoist Culture Centre Database" is now arranged in Wiki format, with many entries available both in Chinese and in English.
The English translations are often problematic, but the website as a whole provides a good overview of Taoism as seen in present-day China.
There are several entries on alchemy in the section "Religious Practise".
The website is here:
English: FYSK Daoist Culture Centre Database