Break the Ice
Meaning: To break a conflict, start communication or a friendship.
Origin: the saying dates back to when road transportation didn’t exist yet and ships would be the only means of transportation and trade.
Source: Meme Crunch
Sometimes the ships would get stuck during the winter due to ice. The country waiting to receive the product would send small ships to “break the ice” to clear the way for the trade ships. This was a gesture of affiliation and understanding between the two countries.