Thanks for your reply. I am using a PC version.
If I load the saves before the BUG happened (very long before), it's OK.
Selling or destroy something will make the number of iterms that I can carry become less. Actually, at the time when I realized this BUG, I could carry 40 items (the maximum is 75). After selling some items, I found that I can only carry 34, and now it becomes 21. I have played the game for over 70 hours and I dont want to start it over. I hope there can be a solution.
