Academies don't lose families to competitors.They lose them in the gaps.学院流失家庭，多数不是输给同行。是从缝隙里漏掉的。

The five leaks五个漏洞

Every academy we have seen leaks in the same five places. None of them announce themselves.我们见过的学院，都在同样这五个地方漏。没有一个会自己出声。

• The package that expired three weeks ago三个星期前就过期的配套Nobody called. The family hasn't decided to quit — they're waiting to be remembered.没有人打过电话。家庭并没有决定要走——他们在等有人记得他们。
• The family that attended a trial来上过试课的家庭They came, they liked it, and nobody followed up.他们来了，也喜欢，然后没有人跟进。
• The seat held by a child who already left已经离开的孩子还占着的位子A place nobody can sell, on a register nobody has questioned.一个卖不出去的位子，挂在一份没有人质疑过的名单上。
• The conversations that walked out the door跟着人一起走掉的对话When an admin resigns, every enquiry and promise on her phone goes with her.行政人员一辞职，手机里的每一则询问与每一个承诺都跟着走。
• The enquiry at 9.40pm晚上九点四十的那则询问Answered at 10am tomorrow. By then the parent has messaged two other academies.明早十点才回。到那时家长已经问过另外两家学院。

A chatbot can catch the fifth. Only an operating system catches all five.聊天机器人只接得住第五个。只有操作系统能五个全接住。

Every one of those five sits between two parts of your business, which is why nobody owns them. See the whole thing on one page — the journey a family takes, and who looks after each step.这五个漏洞，每一个都卡在生意的两个部分之间——所以没有人认领它们。在一页里看完整张图：一个家庭走过的历程，以及每一步由谁负责。

What runs on HullHull 上面跑着什么

One system, from the first message to the closed books. Every tile below is a working part of the product — open any of them and read exactly how it works.一套系统，从第一则讯息到结清的账本。下面每一块都是产品里已经在跑的部分——点开任何一块，看它究竟怎么运作。

The assistant that knows when to stop懂得在哪里停手的助手

Hull answers enquiries on your own WhatsApp number in seconds, reading your real timetable and published prices. What matters more is what it refuses to do.Hull 用你自己的 WhatsApp 号码，几秒内回复询问，依据的是你真实的课表与公开的价格。更重要的是，它拒绝做什么。

What Hull does not doHull 做不到什么

You will find this out eventually, so you may as well find out now.你迟早会发现，不如现在就知道。

Proof, not promises拿证据，不给承诺

Every guide below documents software that exists today. Open the ones that match the part of your academy that hurts most — that is the fastest way to judge whether this is real. Anything still unfinished is labelled a preview inside the product, and listed above.下面每一篇指南记录的，都是今天就存在的软件。挑你学院最痛的那一块打开来看——这是判断它是不是真的最快的方法。还没做完的东西，在产品里都标着「预览」，也列在上面。