Why does the Japanese government keep allowing Chinese people infected with coronavirus to enter to Japan?

Q1. Why does the Japanese government keep allowing Chinese people infected with coronavirus to enter to Japan?

More than half of Japanese parliamentarians are pro-Chinese. Pro-China parliamentarians visit China every year. At that time, the Chinese Communist Party is said to be embracing and seizing the weakness of them.

Toshihiro Nikai, Pro-China boss in Japan, Liberal Democratic Party secretary-general, President of the National Travel Agents Association, he and his group allegedly refused to ban Chinese people in anticipation of Chinese tourists' money during the Chinese New Year. However, Japan could not make money because China banned group travel to foreign countries during the half of the Chinese New Year. The spread of the coronavirus in Japan has prevented many Japanese from going to travel, leisure, restaurants, shopping, and schools. As a result, economic activity is rapidly shrinking. Since February 20, many countries have begun to ban the entry of Japanese people, as Japan is a country infected by the coronavirus.

"Penny-wise and pound-foolish."
"Lose not a hog for a halfpenny worth of tar."
"Sometimes the best gain is to lose."
"Don't consider only immediate profits."

President Trump of the United States has firmly banned Chinese from entering the country before February 3. Many Japanese are envious of the United States and respect the president.