"Regarding the case of a Japanese citizen who was engaged in espionage in China, [Minister] Qin stressed that the Chinese side will deal with him in accordance with the law," the Chinese Foreign Ministry said in a statement.
The Japanese foreign minister embarked on a two-day state visit to Beijing on Saturday to mark the 45th anniversary of the China-Japan Peace and Friendship Treaty. This is the first trip by a head of the Japanese Foreign Ministry to China since December 2019.
Japanese Kyodo news agency reported earlier in the day that Hayashi lodged a strong protest over China's detention of a senior employee of Japanese pharmaceutical firm Astellas Pharma in Beijing last week, and called for his quick release.