Because a lot of the chinese businessman donate money and item to KMT to fight against Japanese, then Japan occupied Penang and they start to seek vengeance against those donors.

Japanese is really cruel back then, rumors about 100k died during the occupation of 3 years 8 months, they mostly kill chinese. Those Japanese soldiers hate chinese to the core because they lost their comrade in China. My grandfather almost lost his live as kids and luckily he was spare by the Taiwanese-Japan soldier, apparently those taiwanese-Japan soldier not as cruel as Japanese soldier.

When Lawrence Wong ask China to forgive Japan after the recent comment by Japan PM Sanae Takaichi, Lawrence Wong forgot Singapore suffered badly during Japan occupation as well. Demi jilat Japan/US and start to say such word in front of the whole world. First time in my life i see such sohai Singapore PM who forgot history. Asia countries especially China is very wary the rise of Japan imperialism.

There are 2 types of Japanese army, one is native japan, another one is taiwanese who are forced to become Japan army. I believe your dad encounter the taiwanese japan army who are not so barbaric.

He should go to read "Sook Ching Massacre" and even LKY claim Japan has killed about 70-100k of singaporeans.

Food rationing, back then really kena makan ubi kayu to survive, then ubi kayu leaf also makan to survive. Most of the rice was control by Japanese back then.

My grandfather still keep some of the banana bank note, literally it has 0 value in the market.

that's the problem why China is wary about the rise of Japan imperialism right wing, Japan PM Shinzo Abe and Sanae Takaichi belong to this camp, China will do whatever they can to stop this imperialism right wing rise.