Du Feng's "yin move" tactics and Zhou Qi's stepping incident are not simple battles of wit, but complex issues involving game strategy, player behavior, and professional ethics.
First of all, about Du Feng's "yin move" tactics, this may refer more to a special strategy or arrangement he adopted in the game to deal with his opponent. In competitive sports, coaches and players often develop tactics based on the characteristics of their opponents in order to win the game. However, these tactics must be carried out in accordance with the rules of the game and work ethic. If the so-called "shady tricks" involve breaking the rules or harming the interests of the opponent, then this is clearly unacceptable.
Secondly, about Zhou Qi's stepping incident, which involves the specific behavior of the players in the game. Foot padding is an act that can cause injury to an opponent and is undoubtedly a violation of professional ethics and sportsmanship if it is done intentionally during a match. However, it is also important to take into account the intensity and chance of the game, and sometimes certain actions of the players may not be intentional, but rather unconscious actions that occur in the heat of confrontation.
Whether it is the tactical arrangement of the coach or the specific behavior of the players, it should be premised on abiding by the rules of the game and professional ethics. In competitive sports, victory is important, but it is more important to show your strength and style through fair and just play. At the same time, we should also respect the opponent, the referee, and the game, and jointly create a good sports competition environment.
As for whether Zhou Qi's stepping stone is really a battle of wits, it depends on the specific circumstances and evidence. If it is an unconscious action during the game, then we can understand it as part of the game, but if it is a deliberate act, then it is clearly a violation of professional ethics and should be punished and condemned accordingly.