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Single-Entry Chokepoint Defense Map (Endless version) / 狭长通道单入口防御爽图（无尽版）

This is the endless version of map (There are no differences except this one is endless): https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3491018475
Try to survive as longer as you can as this is a endless version.

Stone Deposits and Iron Veins on the map are limited, but sufficient for early development.
There is only one infinite Stone Ore Field and one infinite Iron Ore Field, so you'll need to manage resources carefully in the late game.

You start with a Level 3 Town Hall, a decent amount of resources, a generous number of storage buildings, and a basic defense line.

Note: the Tavern, City Fountain, and Workshop buildings are disabled.
This slightly increases the difficulty while creating a more straightforward, linear growth experience.

The enemy wave on Day 2 is very weak. Your starting defenses can handle it easily, and it mainly serves as a demonstration.
Starting from Day 10, enemies will attack every 3 days and grow rapidly in strength.
After the wave on Day 28, you'll have a 5-day preparation window before the final wave on Day 33.
For the endless mode: The last wave will repeat endlessly in every 5 days, and each time they will become stronger.

By Day 33, you should have enough time to fully upgrade all the necessary technologies.

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Update 1: Added one more wave. The final wave now comes on Day 33 instead of Day 30. Enemy strength in the mid-to-late game has also been adjusted.
Update 2: Berry Bushes are now restricted to specific fixed locations.

Endless Version Update:
Update 1: Fixed the problem of initial population being 0.

本图是这个地图的无尽版（这两个图是一样的，除了本图是无尽的）：https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3491018475
尝试尽可能久的存活。

地图上的石矿和铁矿较少，但足够初期发展使用。无限的石矿床和铁矿床分别只有一个，后期需要注意资源分配。
开局给了3级市政厅，给了一定量的资源，给了相当多的仓库类建筑，给了简单的防御阵地。
另外注意：酒馆、城市喷泉、和工坊，这3个加成性建筑被禁止了，这样可以略微增加难度，并且获取更为无脑的线性增长体验。
一开始第2天的敌人很弱，初始防御足够抵挡，仅为展示用途。从第10天开始，敌人每3天就会来一波，并且会迅速变强，直到28天那一波结束后，会有一个5天的准备期，准备迎战第33天的最终敌人。
无尽模式：最后一波会每5天一次无限重复，每次会变得更强。
33天应该足够把需要的科技全部升级完毕。

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更新1：增加1波进攻，所以最后一波从第30天变成了第33天，调整中后期敌人进攻的强度。
更新2：莓果丛被限制在了固定的地方。

无尽版更新：
更新1：修复初始人口为0的问题。