In 2015, while Joe Biden was Vice President, Ukrainian businessman Vadym Pozharsky sent Hunter Biden an email thanking Hunter for 'giving an opportunity to meet your father and spent some time together.' Pozharsky was an adviser to the Ukrainian Burisma Holdings energy company which Hunter was a board member. In 2017, Chinese energy executives sent an email to a Biden business partner discussing '10 held by H for the big guy?' which has been confirmed by another partner that this is in reference to Hunter holding a 10% stake in that deal for Joe Biden.
This information was first revealed by the New York Post during the 2020 Presidential race between Joe Biden and President Trump. Most other news outlets claimed Hunter Biden's laptop was part of a Russian disinformation campaign to interfere in the election and help Donald Trump win. Twitter completely banned any sharing of the link to the New York Post article and suspended users' accounts for doing so.
The recent u-turn in reporting stems from Politco, as the new book 'The Bidens' by reporter Ben Schreckinger confirms the laptop and the emails are genuine.