Master Treats Me as a Substitute?

[Two male protagonists~] 1v1 Shuang Jie he master and apprentice (please avoid it if you don't like it) Master Qing Leng (Shen Muyuan) x Loyal Dog Apprentice (Gu Shu) Two-way secret love: In the early stage, the apprentice mistakenly thought that the master regarded him as the master's emotional sustenance, so he endured and restrained himself. Until later he discovered that the master also had a secret love for him, but he was still worried, pretending to be weak, and conquered the master with tears... After poor little Gu Shu entered the Qingyun Sect, after several years of hard work, he finally let go of his heart for his master Shen Muyuan. Gu Shu finally melted Master Bingshan, but fell into the "substitute" plot again. "What, Master likes Master, I'm just a substitute!!!" Gu Shu fell into endless thoughts. No matter how Master explained, he couldn't listen. He just decided that Master liked Master. Shen Muyuan was helpless, "Evil disciple, what do you have to do to convince me?" Gu Shu looked at the Master pitifully, "Unless Master, you promise me..." The little apprentice, who was pitiful just a second ago, immediately turned into a wolf and pounced on his master—— Shen Muyuan: "..." "Master, are you lying to me? You have always liked Master, wuwuwu——" "Stop, stop - I promise you, okay!" Shen Muyuan held his forehead...