Wechat does not display personalized signature because there is no personalized signature, which can be added through WeChat settings. Open the main interface of WeChat, click "I" in the lower right corner, click the single arrow on the right of WeChat avatar and name, and then click more single arrows on the right. Personality signature is not filled in at this time. Click the single arrow on the right, enter your personal signature in the blank field, and then click Finish in the upper right corner. The entered personalized signature can be displayed in the status bar. Sign your name on the paper first, take a photo with your mobile phone, open the Excel file to be signed, and then click "Insert-Picture". Insert the signature image into the signature file form to be opened. At this point, move the mouse around the signature image and hold down the shift key to resize the signature image. Move the resized image to the appropriate location. Select the picture, click Color under the Format menu, and then select Set Transparent Color. Click the background of the signature picture with the mouse. The background of the handwritten signature image becomes transparent, which makes the background color and form of the signature not conflict and looks beautiful.