阶梯倍投最佳方案

简介：When I came to the barbecue stall and house where Mrs. Gong used to stay, I found that it had been demolished and became part of the construction of Tianyue Square. Later, after asking around, I learned that Mrs. Gong and the others had moved to the opposite side of the Bitan Bridge, so the two of them moved together. I turned back and looked in the direction of the old street. After many twists and turns, I finally found Mrs. Gong’s house.