I want to know the answer to the following question:
What is Taiwanese in Southern Taiwan based on?
All the background I'm provided with is that "On the other hand, the variants spoken in Singapore and Malaysia have a substantial number of loanwords from Malay and to a lesser extent, from English and other Chinese varieties, such as the closely related Teochew and some Cantonese.". Is that enough to answer the question?
Answer: no