In which chapter are the ambiguous and warm words between Tang San and Xiao Wu in Douluo Continent, please tell me more...

There are many. I forgot how many chapters. I will give you a few names and search them yourself: The Kiss between Huo Wu and Xiao Wu, Xiao Wu, My Lover Meets Again, Battle to the Death in the Forest, Xiao Wu :Swear not to leave me, Xiao Wu: Brother, comb my hair, Haotian will start a new beginning. Actually, the bits and pieces of ambiguity between them appear in almost every chapter after they met, but their romance is in During the Soul Master Elite Competition, it gradually became clear that before the competition, Tang San's feelings for Xiao Wu were purely brother and sister. Probably, the slight change occurred after Tang San combed Xiao Wu's hair. It can be said that Tang San's feelings for Xiao Wu slowly changed in the Soul Master Elite Competition