YOYO may not know the brand of honor.
Although HONOR is well-known in the domestic market, it is not well-known in the international market. As an internationally renowned artist, YOYO may not know the brand honor. So HONOR's goal of shouting slogans has not been achieved.
YOYO may cooperate with other brands.
As an international artist, YOYO may have cooperated with other brands. If HONOR cooperates with YOYO, it may conflict with other brands, so YOYO chooses not to respond to HONOR's slogan.
YOYO may not want to cooperate with HONOR.
Finally, YOYO may not want to cooperate with HONOR. Although HONOR is well-known in the domestic market, it is not well-known in the international market. Therefore, YOYO may think that cooperation with HONOR will not enhance its popularity, nor will it bring more business opportunities for itself.
HONOR's slogan didn't get a response from YOYO, probably because YOYO didn't know the brand HONOR, had a cooperative relationship with other brands, or didn't want to cooperate with HONOR. No matter what the reason, HONOR needs to make greater efforts to enhance its brand awareness in order to get more attention and cooperation opportunities.