qǐng jǐnkuài shàngmén.

请 makes the sentence sound like a polite request, similar to please in English.

So 请尽快上门 means something like Please come over as soon as possible or Please come on-site as soon as possible.

A few useful points:

• 请 + verb phrase is a very common pattern for making polite requests.
• It does not always have to be translated word-for-word as please.
• Depending on context, it can sound polite, formal, or businesslike.

Examples:

• 请坐。 = Please sit down.
• 请稍等。 = Please wait a moment.
• 请尽快回复。 = Please reply as soon as possible.

Because 尽快 is an adverb, and in Chinese adverbs usually come before the verb they modify.

Here:

• 尽快 = as quickly as possible / as soon as possible
• 上门 = come to someone's place / come on-site

So the structure is:

• 请 + 尽快 + 上门

This is very normal Chinese word order:

• polite marker
• adverb
• verb

Compare:

• 请尽快回复。 = Please reply as soon as possible.
• 请马上过来。 = Please come over immediately.
• 请及时联系我。 = Please contact me promptly.

上门 literally looks like go up to the door, but in real usage it usually means:

• to come to someone's home
• to come to the customer's location
• to come on-site
• to visit in person

It is often used in service, business, or appointment situations.

For example:

• 上门维修 = come to repair something on-site
• 上门服务 = door-to-door service / home service
• 上门取件 = pick up from the customer's location

So in this sentence, 上门 does not just mean arrive at a door literally. It usually implies coming to the other party's place.

It is very common, but it often sounds a bit more practical, businesslike, or service-related than a casual come over.

For example:

• A repair company might say: 我们明天可以上门。
• A customer might say: 请尽快上门处理。
• A delivery or service platform might use it in notices or messages.

If you are casually inviting a friend, you are more likely to hear:

• 来我家吧。 = Come to my place.
• 过来一下。 = Come over for a moment.

So 上门 is natural, but its tone often depends on context.

Chinese often leaves out the subject when it is obvious from context.

In 请尽快上门, the person being asked to come is not stated, but the listener or reader can usually figure it out from the situation.

For example, this might be said to:

• a repair worker
• a technician
• a service provider
• a customer service representative

English often needs a subject like you:

• Please come as soon as possible.

Chinese can simply say:

• 请尽快上门。

This omission is very normal in Chinese.

It is grammatically a request, because of 请, but depending on context it can still sound quite direct.

Tone depends on situation:

• In customer service or business writing, it sounds normal and polite enough.
• In personal conversation, it may sound a bit blunt if there is no extra softening.

For a softer tone, Chinese might add words like:

• 麻烦您尽快上门。 = Could I trouble you to come over as soon as possible?
• 请您尽快上门。 = Please come over as soon as possible.
  (您 makes it more respectful.)

So 请 helps, but the overall sentence is still fairly concise and direct.

Because 尽 is a character with more than one pronunciation.

In 尽快, it is pronounced jǐn and means to the greatest extent possible or as much as possible.

So:

• 尽快 = jǐnkuài = as quickly as possible

You may also see 尽 pronounced jìn in other words, with different meanings.

For learners, the safest approach is:

• memorize the pronunciation together with the word
• learn 尽快 = jǐnkuài as one unit

Yes, but the meaning changes slightly.

• 尽快 = as soon as possible
• 马上 = immediately / right away

So:

• 请尽快上门。 = Please come over as soon as possible.
• 请马上上门。 = Please come over immediately.

马上 usually sounds more urgent and stronger. 尽快 can allow for a little more flexibility, as long as it happens soon.

In many real situations:

• 尽快 is common in business or service communication
• 马上 is used when the urgency is very high

Not exactly.

• 来 just means come
• 上门 specifically suggests coming to the person's place / coming on-site

So 请尽快来 is more general:

• Please come as soon as possible.

But 请尽快上门 is more specific:

• Please come to my place / our location / the site as soon as possible.

If the location matters, 上门 is more precise.

Yes. Both are correct.

• 请你尽快上门。 = Please come over as soon as possible.
  More neutral or informal.
• 请您尽快上门。 = Please come over as soon as possible.
  More polite and respectful.

The original sentence leaves out the pronoun, which is common in Chinese. Adding 你 or 您 makes the target clearer.

In service or professional settings, 您 is often a better choice if you want to sound courteous.

Yes, it is natural, especially in a message, notice, or customer-service context. But on its own, it can sound a little brief.

For example, in real life people might say:

• 请尽快上门处理。
  Please come on-site as soon as possible to handle it.

• 麻烦您尽快上门看看。
  Please come over and take a look as soon as possible.

• 请您尽快安排上门。
  Please arrange an on-site visit as soon as possible.

So 请尽快上门。 is correct and natural, but it may sound like a short instruction unless more context is added.