你好，我是周兆坤，目前在 Yami（北美最大亚洲电商平台）担任 Growth Engineer。
我专注于电商增长全链路：营销自动化、流失预测模型、用户分层系统、转化漏斗优化。日常使用 SQL、Python 和数据仪表盘驱动决策。
这个网站是我的个人实验田——系统整理了 37 个电商增长指标，并用 100+ 个真实产品做了 SEO 落地页实验。所有内容开源，欢迎交流。
系统整理电商增长全链路 37 个核心指标：定义、公式、SQL、优化策略、企业案例。面向增长团队内训与自学。
How a Cardi B TikTok feature sent Missha US sales up 816% and BB cream searches up 329% in a week — and why this decade-old staple went viral.
Barrier-first skincare is replacing glass skin — what bloom skin is, and which Korean sunscreens fit the trend.
Starbucks kept expanding ube drinks through 2026. What the purple yam trend means for US shoppers — and what to buy today.
A practical guide to buying Korean & Japanese sunscreens in the U.S. — retailer comparison, authenticity verification, and editor picks.
Where to buy ramen, snacks, condiments & Asian beverages online in the U.S. — category breakdown with 30+ product picks.
How to buy authentic K-beauty online: serums, creams, sunscreens, hair care & beauty devices — with counterfeit detection tips.
Best Japanese drugstore picks in the U.S.: acne treatment, hair masks, pore care & personal care — usage guides included.
Rice cookers (Zojirushi vs Tatung), soy milk makers & more — voltage guide and 15+ product recommendations.
140+ 篇关于裁员、岗位贬值、职业选择的判断文章——从 DeepSeek 涨价到星巴克裁员传闻，看 AI 时代普通人怎么站队。
从补贴圈地到按算力计费——AI 越贵，你的判断越值钱；AI 越便宜，你的执行越危险。
传闻是假的，情绪是真的——为什么没被证实的裁员传闻能上两个热搜。
涵盖获客、激活、转化、收入、留存、客户价值 6 大模块，配套闪卡、对比分析和互动测验。
816% TikTok Shop sales jump, 329% search spike in a week — the K-beauty staple at the center of the moment.
Barrier-first skin + daily SPF — what the 1.7M-video TikTok trend means for your sunscreen pick.
The purple yam followed matcha's exact playbook. What it is, why it's trending, and what US shoppers can buy now.
Compare Yami, Amazon, YesStyle — delivery, authenticity, price ranges, and a practical buying checklist.
From Ichiran ramen to Samyang buldak — a category-by-category guide with 30+ product recommendations.
Sulwhasoo, SKIN1004, Beauty of Joseon — authentic K-beauty shopping guide with counterfeit detection tips.
Lion Pair acne care, Fino & Tsubaki hair masks — complete usage guides and comparison tables.
Zojirushi vs Tatung rice cookers, Joyoung soy milk makers — voltage compatibility guide included.
各种增长实验和 side project，跑通了就留下，跑不通就当学费。