orange [thickened upgrade]](橙【加厚升级款】) blue [thickened upgrade]](蓝【加厚升级款】) green [thickened upgrade]](绿【加厚升级款】)

10 layers [more layers, more space-saving]](10层【越多层越省空间】) 9 layers [more layers, more space-saving]](9层【越多层越省空间】) 8 layers [more layers, more space-saving]](8层【越多层越省空间】) 7 layers [more layers, more space-saving]](7层【越多层越省空间】) 6 layers [more layers, more space-saving]](6层【越多层越省空间】) 5 layers [more layers, more space-saving]](5层【越多层越省空间】) 4 layers [more layers, more space-saving]](4层【越多层越省空间】) 3 layers [more layers, more space-saving]](3层【越多层越省空间】) 2 layers [more layers, more space-saving]](2层【越多层越省空间】) 1 layer [more layers, more space-saving]](1层【越多层越省空间】)