(1) ① Empty melancholy: Lament that the world is busy with the celebration of the festival and do not understand or forget the profound historical connotation of the Dragon Boat Festival; express the nostalgia for the patriotic poet Qu Yuan .
②No one can understand: It expresses the author's loneliness and loneliness that are not understood by the world, and also expresses his respect for Qu Yuan's loyalty and integrity.
(2) ①Method: Contrast. ② Brief analysis: The busy and joyful people in the upper palace contrast with the author's melancholy alone; the secular people's incomprehension of Qu Yuan in the lower palace contrasts with the author's deep sadness when reading "Li Sao".
(1) This question is about the understanding of the thoughts and emotions expressed by the key words, combined with the context, especially the following "Who pays tribute to Yuanxiang again" and "The tree turns to the shade at noon" , the meaning is not difficult to understand.
(2) This question is an examination of expression techniques. The contrast or foil should be said to be accurate. Please note that the title refers to the "most prominent expression technique". Although there are "allusion" techniques, it is not outstanding.