According to the ability, will you get a guaranteed contract? If you are protected, your reputation will naturally be greater and your strength will be recognized. If it is not guaranteed, it may face various problems such as layoffs.
Trading to the protected first draft means:
The first round is guaranteed by the contract. There are one or two rounds in the NBA draft. Players in the first round can generally get guaranteed contracts, while players in the second round generally have a bitter fate and may face problems such as being laid off and low wages. Unless they are really strong, players who speak by their strength may not be able to keep it in the second round, like Arenas.
Knowledge expansion:
In order to ensure that the strength level of each team in the league will not be too different, thus increasing the excitement and popularity of the game, after the annual finals, the NBA will hold the annual "Newcomer Draft" conference in late June.
Newcomers participating in the "draft" are generally students from universities all over the United States. They are usually the best in the NCAA National College Basketball League.
For young players who participate in the draft, the NBA ranks them according to their performance in college (or high school). Then according to the winning percentage of this year's regular season, NBA teams choose players in turn, starting with the team with the worst performance. Each team can only choose one newcomer in each round, usually 2-3 rounds.