The Type 98 is a Chinese-made assault rifle developed in 1998. It is chambered in 5.8x42mm and is fed from a 30-round detachable box magazine. The Type 98 has a gas-operated, rotating bolt action and is capable of firing in both
From Wikipedia
The experimental Type 98 Ta-Se was a Japanese self-propelled anti-aircraft gun using a Type 98 20 mm anti-aircraft gun. It used the chassis of the Type 98 Ke-Ni light tank. It did not enter production.