这个季节在考虑升级我的徒步装备。纠结是投资买一个更轻的背包，还是终于把旧靴子换掉。对于那些进行过更长距离徒步的人来说，哪种升级在舒适度和疲劳方面带来的改善最大？
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Thinking about upgrading my hiking setup this season. Torn between investing in a lighter backpack or finally replacing my old boots. For those who’ve done longer treks, which upgrade made the biggest difference for comfort and fatigue?