The weather sign is cold.

In spite of the cold weather, Lao Wang came, with the following symbols:

In spite of the cold weather, Lao Wang came. This sentence can be expressed by punctuation. Here are some possible options:

Period: Although it was very cold, Lao Wang came. This sentence can end with a period. Although the weather is cold and Lao Wang is coming, these are two independent clauses, and there is no conjunction between them, so you can use a full stop.

Comma: Although it was cold, Lao Wang came anyway. In this sentence, a comma can be used to connect two clauses and emphasize the logical relationship between them. This sentence, although the weather is very cold, Lao Wang still came. There are two independent clauses, but there are conjunctions between them, so you can use commas.

Semicolon: Although the weather is very cold; Lao Wang came after all. In this sentence, a semicolon can be used to connect two clauses and emphasize the equal relationship between them. In this sentence, although the weather is cold and Lao Wang is coming, these two clauses are independent, and there is no conjunction between them. You can use a semicolon.

Cologne: Although it was cold, Lao Wang came anyway. In this sentence, a colon can be used to connect two clauses to emphasize the causal relationship between them. In this sentence, although the weather is cold and Lao Wang is coming, these are two independent clauses, and there is no conjunction between them, so a colon can be used.

In a word, punctuation can help us better express the meaning and relationship of sentences. In this sentence, the use of commas, semicolons, colons or periods can express different logical relationships, and the specific punctuation needs to be determined according to the context.