The Chinese mainland imposed sanctions against Hsiao Bi-khim, a diehard "Taiwan independence" separatist on Friday, adding it will take all other necessary punitive measures to hold her accountable in accordance with the law.

The spokesperson of the Taiwan Work Office of the Communist Party of China Central Committee was authorized Friday to announce sanctions against Hsiao, who is now the representative of the island's secession-desiring Democratic Progressive Party authorities in the United States.

The sanctions ban her and her family from entering the mainland and Hong Kong and Macao special administrative regions.

It also bans Hsiao's sponsors and affiliated enterprises from cooperating with mainland organizations and individuals.

Depending on foreign influence and seeking independence by relying on the US, she deliberately provoked confrontations between the two sides of the Taiwan Straits and wantonly undermined peace and stability across the Straits, further exposing her stubborn nature of seeking "independence", said the spokesperson.

The mainland could take all other necessary punitive measures to hold her accountable in accordance with the law, said the spokesperson.

History has proven and will continue to prove that "Taiwan independence" is a dead end, and the die-hard "Taiwan independence" separatists who rely on the willful provocation of external forces will surely fail, said the spokesperson.

"No one and no force should underestimate our strong resolve, firm will and strong ability to safeguard China's sovereignty and territorial integrity," added the spokesperson.