It is noted that & nbsp; the reason for this step on the part of the Chinese government was the opening of a representative office of Taiwan in & nbsp; Vilnius. Beijing sees this as a violation of the One China Principle. and & nbsp; its territorial integrity, and & nbsp; as well as interference in & nbsp; its internal affairs.
The Chinese Foreign Minister warned the United States against escalating tensions over the Taiwan issue 
” In this regard, China expresses acute discontent and & nbsp; a strong protest and & nbsp; decided to downgrade Sino-Lithuanian diplomatic relations to & nbsp; the level of attorneys & nbsp; & nbsp; said in the & nbsp; statement of the official representative of the Ministry of Foreign Affairs of the country.
On November 18 & nbsp; despite & nbsp; resolute protests of Beijing in & nbsp; Lithuania the representation of Taiwan started working. Thus, Lithuania became the first country to allow Taiwan to open an office with & nbsp; whose name does not use & nbsp; 'Taipei', but & nbsp; 'Taiwan'. The fundamental difference lies in the & nbsp; fact that, although Taiwan and & nbsp; has de facto representations in & nbsp; other countries, & nbsp; the name of the offices appears in the name of Taipei.
On November 16, US President Joe Biden at a & nbsp; meeting with Chinese President Xi & nbsp; Jinping online confirmed that & nbsp; Washington does not & nbsp; support Taiwan's independence. The American leader pointed out the & nbsp; interest of the United States in the & nbsp; absence of unilateral steps that change the status quo around & nbsp; Taiwan.
With & nbsp; and & nbsp; the US administration noted that & nbsp; representatives of the White House and & nbsp; had previously stated about & nbsp; & nbsp; support for the “ one China '' policy.
Official relations between the government of the PRC and & nbsp; its island province were interrupted in & nbsp; 1949, when the losers in the & nbsp; civil war with & nbsp; the Chinese Communist Party Kuomintang forces led by & nbsp; Chang Kaiishi moved to & nbsp; Taiwan. Contacts between the island and mainland China resumed in the late 1980s. The USA openly supported the Taiwan authorities.