The players of each country have different views on how they will approach this event. Some split up while others grouped up, but the safest bet would be to group up. They might be easier to target but not everyone will immediately try to start a fight with an opposing team.
The vast majority of the groups did not split up while only about seven countries split up in order to look for the targets. Not even a minute into the match, a startling system notification already gave the players a sense of awareness of the threat of the best archer in the game.
[Player Hou Yiwei (China) has successfully destroyed a target. He earns one point for his group.]
The fact that it has only been a few seconds that someone already scored meant that the groups need to step up their game. Some saw this as a signal to immediately find targets to score while other teams stayed cool and assessed the situation.