In one sentence, describe what the following article is about: If you let WeChat look at your contacts list, WeChat will use that information to search for other WeChat users you might know.  These contacts will be added to your list of friends.   You can also search by WeChat ID.  The WeChat ID is the name you typed in the Full Name field when you created a WeChat account. You can also search for users by QQ ID, which is the most popular messaging app in China, but unless you have friends in China, this probably won’t be useful to you.
Summary: Open WeChat and touch Contacts. Touch Recommended Friends. Touch Add next to anyone you want to add. To find friends using their phone number, touch + in the top right corner. Touch Add Friends. In the search field, type the phone number of a friend who you know has WeChat.

In one sentence, describe what the following article is about: The best way to not have stretch marks is to not get them in the first place. Try maintaining a healthy weight by exercising at least 150 minutes a week and eating a healthy diet full of fruits, veggies, whole grains, and lean protein. Being out in the sun can make stretch marks more noticeable. If you don't want to avoid the sun, simply cover up areas with stretch marks when you're outside. Hydrated skin is more elastic, so staying hydrated can help prevent you from getting new stretch marks. Drinking about 2 litres (68  fl oz) of water a day can help keep you hydrated. You can prevent or minimize the development of new stretch marks by keeping your skin hydrated. This is especially important for pregnant women or people who are losing or gaining weight. Apply moisturizing oils and creams at least once a day, especially if you are pregnant.  Apply moisturizers frequently enough that your skin does not begin to feel itchy or dry. These sensations are signs that your skin is dehydrated and might be starting to stretch. If you are pregnant, use safe products such as olive oil, cow udder cream, and shea oil or shea butter cream. Gently supportive undergarments that cover your belly and thighs can be helpful for preventing or reducing stretch marks, especially if you are overweight. This is also a good alternative to expensive cosmetic surgeries, especially if the stretch marks cover a large area of skin.
Summary: Maintain a healthy weight. Avoid sun exposure. Stay hydrated. Moisturize your skin daily. Wear supportive underwear.

In one sentence, describe what the following article is about: The Apple menu is in the upper-left corner of the screen. You can now use the App Store to check for the latest versions of your App Store apps, as well as install any security and stability updates for OS X. These changes were made in OS X Yosemite, so if you're running an older version of OS X, see the Installing Updates in Legacy OS X Versions section below. You'll find this at the top of the App Store window. The button display a number showing how many updates are available. The update will begin downloading immediately, and will install as soon as it finishes downloading. You'll see both app updates and system updates in the list of available updates (if any are available). If you have a lot of updates available, click the "Update All" to download and install all of them at once. Some updates will only appear after an older update has been installed. Open the Updates tab again after you've installed all available updates to see if more are now available.
Summary:
Click the Apple menu and select "App Store." Click the "Updates" tab. Click "Update" next to any available update to install it. Click "Update All" to download and install every available update. Check for updates after installing the updates you had available.