Chinese President Xi Jinping sent a congratulatory message to Biden on his election win, China’s state-run news agency Xinhua reported Wednesday.

Xi noted in his message that promoting the healthy development of U.S.-China relations is in the best interest of both nations and the international community as a whole, according to Xinhua. He also emphasized cooperation and mutual respect between the two nations.

China’s Vice President Wang Qishan also sent a congratulatory message to Kamala Harris on the same day.

President Trump is planning to fly to Gettysburg, Pennsylvania, Wednesday, where a handful of Pennsylvania state Republican lawmakers are meeting about the 2020 election, sources familiar with the planning confirm to ABC News.

The exact details of Trump’s trip are still in flux and could be scrapped altogether, the sources say, adding Trump Attorney Rudy Giuliani has been pushing the president to join.

The sources add as of now, Trump is planning to fly via Marine One to Pennsylvania and what he does on the ground remains unclear but it could include meeting this group of state legislators.

Multiple sources say senior White House and campaign aides spent Monday trying to convince Trump to not make the trip.

The Trump campaign announced Giuliani and his team would go to Pennsylvania for a strictly Republican “Majority Policy Committee” hearing at the Wyndham Hotel in Gettysburg, Pennsylvania, at 12:30 p.m. According to a release on the Pennsylvania State Senate's website, at least seven state senators, including the Senate majority leader-elect, will be present.

The state Senate website refers to it as an “informational meeting regarding 2020 Election Issues [sic].” It will be streamed.

The release features a statement from state Sen. Doug Mastriano, who requested the meeting.

“Elections are a fundamental principle of our democracy – unfortunately, Pennsylvanians have lost faith in the electoral system,” said Mastriano, who recently called for the resignation of State Department Secretary Kathy Boockvar for negligence and incompetence. “It is unacceptable.”

“Over the past few weeks, I have heard from thousands of Pennsylvanians regarding issues experienced at the polls, irregularities with the mail-in voting system and concerns whether their vote was counted,” said Mastriano. “We need to correct these issues to restore faith in our republic.”

Pennsylvania certified its results for Joe Biden just Tuesday.

ABC News' John Santucci and Katherine Faulders

In a statement Tuesday night the Trump campaign touted upcoming state legislature public hearings in Pennsylvania, Arizona and Michigan as the president's campaign continues to look to state legislatures to help overturn the election, despite states saying it's not possible.

The hearings would follow both Michigan and Pennsylvania certifying their election results this week.

Trump's personal lawyer Rudy Giuliani is set to appear at the Wednesday hearing in Pennsylvania where he will deliver a "presentation," according to the statement.

Pennsylvania Senate Republicans called the hearing an "informational meeting on 2020 election issues" in a tweet Tuesday.

Shortly after the Trump campaign released its statement, a spokesperson for Michigan Speaker of the House Lee Chatfield told ABC News that the House Oversight committee will not meet next week for a hearing on the election.

Trump's legal team "has been invited to submit written testimony instead," Gideon D'Assandro, the spokesperson, told ABC News.

The Trump campaign also continues to put pressure on state legislatures to intervene, writing that they "have the sole authority to select their representatives to the Electoral College."

However, states have made it clear that legislatures picking Trump electors to override the popular vote is a non-starter -- including recently Arizona Senate President Karen Fann.

-ABC News' Will Steakin and Olivia Rubin

President-elect Joe Biden plans to deliver a Thanksgiving address from Wilmington, Delaware, on Wednesday, his transition team said in a statement.

In the address, he will discuss the "discuss the shared sacrifices Americans are making this holiday season and say that we can and will get through the current crisis together," the statement said.