北京市政府已将每月11日定为“排队日”。“排队日”活动收到了良好的社会效果。假设你是李华，现在请你根据下列提示，用英语给某报社写一封信，呼吁在全国范围内开展“排队日”的活动。

信的主要内容包括以下几点：

1。北京的“排队日”有助于人们享受更轻松、更和谐的生活，其它城市可借鉴；

2。一些人在购物或等车时不排队，定一个“排队日”是对他们的提醒，这样，人们会逐渐养成自觉排队的好习惯；

3。希望每天都成为“排队日”，这样，我们的社会更加美好。

注意：1。不必逐条翻译，可适当发挥；

2。词数：100左右；

3。参考词汇：排队日Lining-upDay;和谐的harmonious

One possible version:

Dear Editor，

A Lining-up Day has been set in Beijing and it helps people enjoy an easier and more harmonious life。 This has set a good example for other cities。 Nowadays， some people are unwilling to line up when they are doing their shopping or waiting for the bus， so I think it is necessary to establish a Lining-up Day to remind them。 In this way， people will form the good habit of lining up voluntarily。 I do hope that we will stick to this practice and popularize it until each day becomes a Lining-up Day。 I’m sure it will make a big difference and our society will become more and more pleasant。

Yours，

Li Hua