While working on this over the last year, I was constantly looking for good tests to check my renderer against.
宜昌人对蜡梅的喜爱，印在了年年岁岁的记忆里。作为传统的年宵花，春节前后，郊区农民剪下自家的蜡梅花枝进城出售，很快就会销售一空。捧着造型独特的蜡梅花枝回家，选个好看的花瓶插上，淡淡的清香弥散开来，新春的氛围一下子就浓了。
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Here's the insertion algorithm in Python. Step through the code and watch each line execute on the tree:
Наука и техника
▲图片来源：X@munou_ac