https://www.reuters.com/world/asia-pacific/arm-china-investor-sues-company-escalating-ceo-spat-amid-sale-2020-09-16/ https://www.reuters.com/world/asia-pacific/

https://www.reuters.com/world/asia-pacific/arm-china-investor-sues-company-escalating-ceo-spat-amid-sale-2020-09-16/ https://www.reuters.com/world/asia-pacific/arm-china-investo... > Wu retains control of the Chinese unit via his possession of the company stamp which is necessary in China to authorize important bureaucratic procedures. Chop is another word for the stamp.