Warm-up game: Picture Guessing Game (Theme: Vietnamese Tet), in English. Use the following vocabulary: lucky money fireworks peach blossom family reunion bánh chưng Each round should include: 1 question slide containing multiple pictures only (no text clues except the slide title if needed). 1 answer slide immediately after, revealing the correct word. The presentation should consist of alternating question slides and answer slides for each vocabulary item.