Beijing is too vast to fully explore in 7 days. But with limited time, you should of course focus on the highlights. Climbing the Mutianyu Great Wall as night falls, your legs may go weak from the steps, but that moment standing at the top makes everything worth it. Chang’an Avenue under the setting sun is immensely broad, making your heart feel expansive too. Besides these must-see attractions, the local life attracts me more: the old buildings in Beixinqiao, the rows of food stalls – it’s very pleasant to stroll while eating, and you can stop to watch the old masters living nearby play chess. When tired from walking, rent a shared bike and just go anywhere – you might discover more novel things. If you have more time, I recommend visiting a local wet market; that’s the daily life of Beijingers. Then go explore the night market: lots of snacks, fun collectible figurines, and if you’re interested, you can even have your future told (a unique Chinese practice: reading your Ba Zi / Eight Characters). The longer you stay, the more you will grow to love Beijing.