Freshly-found Hibiscuses

I heard and learned about Hibiscus (大紅花) from my Biology teacher at school. According to my knowledge at that time, the flowers appeared to be red.

From the roadside flowers posted here, I suspect them to be hibiscuses in pink and yellow.




From the Internet, I learn that there are “pink” and “yellow” hibiscuses and many many others in different colours or even in multi-colours.

I came across the pink one, red at the base of the petals on March 4 and the yellow one, white at the base of the petals on April 12. I wonder if I have made a mistake in identification. Perhaps someone helps me identify them.