/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
 
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
        String example = "He is 45 today\n你今天45岁了\n这个句子没有数字\nOk I see";
        System.out.println(example.replaceAll("(?m)^[^\\p{IsHan}\\n？。，？！]+$", ""));
	}
}

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